Which of the following fuels would be used for most central heating system? [7i-1]- kerosene oil
- charcoal
- petrol
- diesel oil
- Which of the following fuels would be used for a barbecue? [7i-2]
- oil
- charcoal
- coal
- coke
- Which of the following fuels would be used for a vintage steamroller (traction engine)? [7i-3]
- oil
- charcoal
- coal
- natural gas
- Which of the following fuels would be used for a camping stove? [7i-4]
- oil
- charcoal
- coal
- butane gas
- Which is a fossil fuel source of energy? [7i-5]
- natural gas
- wood
- geothermal
- sunlight
- Which is a fossil fuel source of energy? [7i-6]
- wood
- oil
- geothermal
- sunlight
- Which is a fossil fuel source of energy? [7i-7]
- wood
- geothermal
- coal
- sunlight
Which is a renewable source of energy? [7i-8]- oil
- rechargeable battery
- coal
- wood
Which is a renewable source of energy? [7i-9]- hydroelectric
- battery
- coal
- natural gas
Which is a renewable source of energy? [7i-10]- peat
- geothermal
- natural gas
- oil
Which is a renewable source of energy? [7i-11]- peat
- battery
- wind generator
- oil
Which is a renewable source of energy? [7i-12]- peat
- battery
- natural gas
- sunlight
Which is a non-fossil and non-renewable source of energy? [7i-13]- battery
- natural gas
- geothermal
- sunlight
Which is a non-renewable source of energy? [7i-14]- wood
- natural gas
- geothermal
- sunlight
Which is a non-renewable source of energy? [7i-15]- wood
- geothermal
- oil
- sunlight
Which is a non-renewable source of energy? [7i-16]- wood
- geothermal
- sunlight
- coal
Which is TRUE about fossil fuels? [7i-17]- they are non-renewable sources of energy
- oil and gas are formed from the decay of remains of dead land plants
- coal is formed from the remains of dead sea organisms
- the main chemical element in them is hydrogen
Which is TRUE about fossil fuels? [7i-18]- they are renewable sources of energy
- oil and gas are formed from the decay of remains of dead sea organisms
- coal is formed from the remains of large land based animals
- the main chemical element in them is hydrogen
Which is TRUE about fossil fuels? [7i-19]- they are renewable sources of energy
- oil and gas are formed from the decay of coral remains
- coal is formed from the remains of plants
- the main chemical element in them is hydrogen
Which is TRUE about fossil fuels? [7i-20]- they are renewable sources of energy
- oil and gas are formed from the decay of remains of dead land plants
- coal is formed from the remains of dead sea organisms
- the main chemical element in them is carbon
What temperature does the Celsius thermometer read in oC? [7i-21]- 36.0
- 34.0
- 44.0
- 35.5
What temperature does the Celsius thermometer read in oC? [7i-22]- 3
- -7
- 7
- -3
What temperature does the Celsius thermometer read in oC? [7i-23]- 101.0
- 102.0
- 101.5
- 103.0
What temperature does the Celsius thermometer read in oC? [7i-24]- 46.0
- 47.0
- 53.5
- 46.5
What temperature does the Celsius thermometer read in oC? [7i-25]- 132
- 144
- 126
- 131
What temperature does the Celsius thermometer read in oC? [7i-26]- 46.5
- 53.0
- 51.5
- 63.5
What temperature does the Celsius thermometer read in oC? [7i-27]- 203.0
- 201.5
- 206.0
- 227.0
What temperature does the Celsius thermometer read in oC? [7i-28]- 68.5
- 81.5
- 76.0
- 77.0
- Which of these is a desirable property of a fuel for burning? [7i-29]
- gives no smoke on combustion
- difficult to ignite so not too flammable
- gives bright yellow flame to be easily seen
- will not burn too steadily to be wasteful
- Which of these is a desirable property of a fuel for burning? [7i-30]
- gives moderate amount of smoke
- difficult to ignite so not too flammable
- gives bright yellow flame to be easily seen
- will not burn too steadily to be wasteful
- Which of these is a desirable property of a fuel for burning? [7i-31]
- gives moderate amount of smoke
- difficult to ignite so not too flammable
- gives bright clear flame
- will not burn too steadily to be wasteful
- Which of these is a desirable property of a fuel for burning? [7i-32]
- gives moderate amount of smoke
- difficult to ignite so not too flammable
- gives bright yellow flame to be easily seen
- will burn steadily
The diagram shows a simple calorimeter system for measuring the heat given out by a liquid fuel burner. The experiment data for four fuels A, B, C and D is given below. 100 ml (100g) of water was used in the calorimeter to 'collect' the heat given out. The mass of fuel burned and the temperature rise of the water are given.
From the data which fuel is the MOST efficient in terms of energy released per unit mass? [7i-33]- mass of fuel = 1.20 g, temperature rise 24oC
- mass of fuel = 0.80g, temperature rise 12oC
- mass of fuel = 1.75g, temperature rise 28oC
- mass of fuel = 0.50 g, temperature rise 9oC
- The diagram shows a simple calorimeter system for measuring the heat given out by a liquid fuel burner. The experiment data for four fuels A, B, C and D is given below. 100 ml (100g) of water was used in the calorimeter to 'collect' the heat given out. The mass of fuel burned and the temperature rise of the water are given.
From the data which fuel is the LEAST efficient in terms of energy released per unit mass? [7i-34]- mass of fuel = 1.20 g, temperature rise 24oC
- mass of fuel = 0.80g, temperature rise 12oC
- mass of fuel = 1.75g, temperature rise 28oC
- mass of fuel = 0.50 g, temperature rise 9oC
- The diagram shows a simple calorimeter system for measuring the heat given out by a liquid fuel burner. The experiment data for four fuels A, B, C and D is given below. 100 ml (100g) of water was used in the calorimeter to 'collect' the heat given out. The mass of fuel burned and the temperature rise of the water are given.
From the data which fuel would give a temperature rise of 56oC if 3.5g of it is burned? [7i-35]- mass of fuel = 1.20 g, temperature rise 24oC
- mass of fuel = 0.80g, temperature rise 12oC
- mass of fuel = 1.75g, temperature rise 28oC
- mass of fuel = 0.50 g, temperature rise 9oC
- The diagram shows a simple calorimeter system for measuring the heat given out by a liquid fuel burner. The experiment data for four fuels A, B, C and D is given below. 100 ml (100g) of water was used in the calorimeter to 'collect' the heat given out. The mass of fuel burned and the temperature rise of the water are given.
From the data which fuel would give a temperature rise of 63oC if 3.5g of it is burned? [7i-36]- mass of fuel = 1.20 g, temperature rise 24oC
- mass of fuel = 0.80g, temperature rise 12oC
- mass of fuel = 1.75g, temperature rise 28oC
- mass of fuel = 0.50 g, temperature rise 9oC
Which is a unit of energy? [7i-37]- joule
- celsius
- gram
- cm3
Which is a unit of temperature? [7i-38]- joule
- celsius
- gram
- cm3
Which is a unit of mass? [7i-39]- joule
- centigrade
- gram
- cm3
Which is a unit of volume? [7i-40]- joule
- centigrade
- gram
- cm3
Which is a unit of energy [7i-41]- kJ
- oC
- g
- ml
Which is a unit of temperature? [7i-42]- kJ
- oC
- g
- ml
Which is a unit of mass? [7i-43]- kJ
- oC
- g
- ml
Which is a unit of volume? [7i-44]- kJ
- oC
- g
- ml
Which is a unit of energy? [7i-45]- J
- K
- kg
- m3
Which is a unit of temperature? [7i-46]- J
- K
- kg
- m3
Which is a unit of mass? [7i-47]- J
- K
- kg
- m3
Which is a unit of volume? [7i-48]- J
- K
- kg
- m3
Which is TRUE about energy resources? [7i-49]- renewable energy resources are readily replaced as they are used
- non-renewable energy resources will always supply most of our energy needs
- the Sun is the original source for all our energy resources
- non-renewable fossil fuels are no longer being formed
Which is TRUE about energy resources? [7i-50]- renewable energy resources are not readily replaced as they are used
- non-renewable energy resources will not always supply most of our energy needs
- the Sun is the original source for all our energy resources
- non-renewable fossil fuels are no longer being formed
Which is TRUE about energy resources? [7i-51]- renewable energy resources are not readily replaced as they are used
- non-renewable energy resources will always supply most of our energy needs
- the Sun is the original energy source for many of our energy resources
- non-renewable fossil fuels are no longer being formed
Which is TRUE about energy resources? [7i-52]- renewable energy resources are not readily replaced as they are used
- non-renewable energy resources will always supply most of our energy needs
- the Sun is the original source for all our energy resources
- non-renewable fossil fuels are still being formed slowly
The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 1? [7i-53]- burn fuel
- heat water
- move turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 2? [7i-54]
- burn fuel
- heat water
- move turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 3? [7i-55]
- burn fuel
- heat water
- move turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 4? [7i-56]
- burn fuel
- heat water
- move turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 1? [7i-57]
- solar radiation
- air movement
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 2? [7i-58]
- solar radiation
- air movement
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 3? [7i-59]
- solar radiation
- air movement
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 4? [7i-60]
- solar radiation
- air movement
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 1? [7i-61]
- rain water and dam
- flowing water
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 2? [7i-62]
- rain water and dam
- flowing water
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 3? [7i-63]
- rain water and dam
- flowing water
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 4? [7i-64]
- rain water and dam
- flowing water
- rotating turbine
- turn generator
The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 1? [7i-65]- hot volcanic rocks
- making steam flow fast
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 2? [7i-66]
- hot volcanic rocks
- making steam flow fast
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 3? [7i-67]
- hot volcanic rocks
- making steam flow fast
- rotating turbine
- turn generator
- The diagram summarises four stages for a way of producing electricity. Which of the following matches stage 4? [7i-68]
- hot volcanic rocks
- making steam flow fast
- rotating turbine
- turn generator
Which description matches a solar cell? [7i-69]- electrical energy directly from sunlight
- water stored behind a dam
- air flow driven by the sun
- mainly due to the movement of the moon
- Which description matches hydroelectric power? [7i-70]
- electrical energy directly from sunlight
- water stored behind a dam
- air flow driven by the sun
- mainly due to the movement of the moon
- Which description matches wind power? [7i-71]
- electrical energy directly from sunlight
- water stored behind a dam
- air flow driven by the sun
- mainly due to the movement of the moon
- Which description matches tidal power? [7i-72]
- electrical energy directly from sunlight
- water stored behind a dam
- air flow driven by the sun
- mainly due to the movement of the moon
Which description matches wave power? [7i-73]- air flow driven by sun
- hot rocks making steam
- black surface absorbing heat radiation
- sun's energy stored in plants
- Which description matches geothermal power? [7i-74]
- air flow driven by sun
- hot rocks making steam
- black surface absorbing heat radiation
- sun's energy stored in plants
- Which description matches solar panel? [7i-75]
- air flow driven by sun
- hot rocks making steam
- black surface absorbing heat radiation
- sun's energy stored in plants
- Which description matches biomass? [7i-76]
- air flow driven by sun
- hot rocks making steam
- black surface absorbing heat radiation
- sun's energy stored in plants
The energy from __(1)__ is absorbed by green plant __(2)__. In a process called __(3)__, this energy is used to make energy rich __(4)__ like starch and __(5)__ fuels like wood.
Choose word from: biomass, foods, leaves, photosynthesis, sunlight
Which word is missing from __(1)__? [7i-77]- sunlight
- leaves
- photosynthesis
- foods
- biomass
- The energy from __(1)__ is absorbed by green plant __(2)__. In a process called __(3)__, this energy is used to make energy rich __(4)__ like starch and __(5)__ fuels like wood.
Choose word from: biomass, foods, leaves, photosynthesis, sunlight
Which word is missing from __(2)__? [7i-78]- sunlight
- leaves
- photosynthesis
- foods
- biomass
- The energy from __(1)__ is absorbed by green plant __(2)__. In a process called __(3)__, this energy is used to make energy rich __(4)__ like starch and __(5)__ fuels like wood.
Choose word from: biomass, foods, leaves, photosynthesis, sunlight
Which word is missing from __(3)__? [7i-79]- sunlight
- leaves
- photosynthesis
- foods
- biomass
- The energy from __(1)__ is absorbed by green plant __(2)__. In a process called __(3)__, this energy is used to make energy rich __(4)__ like starch and __(5)__ fuels like wood.
Choose word from: biomass, foods, leaves, photosynthesis, sunlight
Which word is missing from __(4)__? [7i-80]- sunlight
- leaves
- photosynthesis
- foods
- biomass
- The energy from __(1)__ is absorbed by green plant __(2)__. In a process called __(3)__, this energy is used to make energy rich __(4)__ like starch and __(5)__ fuels like wood.
Choose word from: biomass, foods, leaves, photosynthesis, sunlight
Which word is missing from __(5)__? [7i-81]- sunlight
- leaves
- photosynthesis
- foods
- biomass
The __(1)__ of plants and animals get buried under mud or sand. Deep underground they are then subjected to a warmer __(2)__ and higher __(3)__. After decaying, without the presence of oxygen, plant material is changed into __(4)__ and animal material into __(5)__ or gas. These are called __(6)__ fuels and take millions of years to form.
Choose word from: coal, fossil, oil, pressure, remains, temperature
Which word is missing from __(1)__? [7i-82]- remains
- temperature
- pressure
- coal
- oil
- fossil
- The __(1)__ of plants and animals get buried under mud or sand. Deep underground they are then subjected to a warmer __(2)__ and higher __(3)__. After decaying, without the presence of oxygen, plant material is changed into __(4)__ and animal material into __(5)__ or gas. These are called __(6)__ fuels and take millions of years to form.
Choose word from: coal, fossil, oil, pressure, remains, temperature
Which word is missing from __(2)__? [7i-83]- remains
- temperature
- pressure
- coal
- oil
- fossil
- The __(1)__ of plants and animals get buried under mud or sand. Deep underground they are then subjected to a warmer __(2)__ and higher __(3)__. After decaying, without the presence of oxygen, plant material is changed into __(4)__ and animal material into __(5)__ or gas. These are called __(6)__ fuels and take millions of years to form.
Choose word from: coal, fossil, oil, pressure, remains, temperature
Which word is missing from __(3)__? [7i-84]- remains
- temperature
- pressure
- coal
- oil
- fossil
- The __(1)__ of plants and animals get buried under mud or sand. Deep underground they are then subjected to a warmer __(2)__ and higher __(3)__. After decaying, without the presence of oxygen, plant material is changed into __(4)__ and animal material into __(5)__ or gas. These are called __(6)__ fuels and take millions of years to form.
Choose word from: coal, fossil, oil, pressure, remains, temperature
Which word is missing from __(4)__? [7i-85]- remains
- temperature
- pressure
- coal
- oil
- fossil
- The __(1)__ of plants and animals get buried under mud or sand. Deep underground they are then subjected to a warmer __(2)__ and higher __(3)__. After decaying, without the presence of oxygen, plant material is changed into __(4)__ and animal material into __(5)__ or gas. These are called __(6)__ fuels and take millions of years to form.
Choose word from: coal, fossil, oil, pressure, remains, temperature
Which word is missing from __(5)__? [7i-86]- remains
- temperature
- pressure
- coal
- oil
- fossil
- The __(1)__ of plants and animals get buried under mud or sand. Deep underground they are then subjected to a warmer __(2)__ and higher __(3)__. After decaying, without the presence of oxygen, plant material is changed into __(4)__ and animal material into __(5)__ or gas. These are called __(6)__ fuels and take millions of years to form.
Choose word from: coal, fossil, oil, pressure, remains, temperature
Which word is missing from __(6)__? [7i-87]- remains
- temperature
- pressure
- coal
- oil
- fossil
We measure __(1)__ using a __(2)__. One __(3)__ of temperature is called the degree __(4)__ (oC). Temperature is a measure of how __(5)__ or cold something is and, because it can change, it is known as a __(6)__.
Choose word from: celsius, hot, temperature, thermometer, unit, variable
Which word is missing from __(1)__? [7i-88]- temperature
- thermometer
- unit
- celsius
- hot
- variable
We measure __(1)__ using a __(2)__. One __(3)__ of temperature is called the degree __(4)__ (oC). Temperature is a measure of how __(5)__ or cold something is and, because it can change, it is known as a __(6)__.
Choose word from: celsius, hot, temperature, thermometer, unit, variable
Which word is missing from __(2)__? [7i-89]- temperature
- thermometer
- unit
- celsius
- hot
- variable
We measure __(1)__ using a __(2)__. One __(3)__ of temperature is called the degree __(4)__ (oC). Temperature is a measure of how __(5)__ or cold something is and, because it can change, it is known as a __(6)__.
Choose word from: celsius, hot, temperature, thermometer, unit, variable
Which word is missing from __(3)__? [7i-90]- temperature
- thermometer
- unit
- celsius
- hot
- variable
We measure __(1)__ using a __(2)__. One __(3)__ of temperature is called the degree __(4)__ (oC). Temperature is a measure of how __(5)__ or cold something is and, because it can change, it is known as a __(6)__.
Choose word from: celsius, hot, temperature, thermometer, unit, variable
Which word is missing from __(4)__? [7i-91]- temperature
- thermometer
- unit
- celsius
- hot
- variable
We measure __(1)__ using a __(2)__. One __(3)__ of temperature is called the degree __(4)__ (oC). Temperature is a measure of how __(5)__ or cold something is and, because it can change, it is known as a __(6)__.
Choose word from: celsius, hot, temperature, thermometer, unit, variable
Which word is missing from __(5)__? [7i-92]- temperature
- thermometer
- unit
- celsius
- hot
- variable
We measure __(1)__ using a __(2)__. One __(3)__ of temperature is called the degree __(4)__ (oC). Temperature is a measure of how __(5)__ or cold something is and, because it can change, it is known as a __(6)__.
Choose word from: celsius, hot, temperature, thermometer, unit, variable
Which word is missing from __(6)__? [7i-93]- temperature
- thermometer
- unit
- celsius
- hot
- variable
Fossil __(1)__ are burned to release __(2)__ energy which is used to turn water into __(3)__. The __(3)__ drives a set of __(4)__ blades which rotate a __(5)__ to make __(6)__.
Choose word from: electricity, fuels, generator, heat, steam, turbine
Which word is missing from __(1)__? [7i-94]- fuels
- heat
- steam
- turbine
- generator
- electricity
- Fossil __(1)__ are burned to release __(2)__ energy which is used to turn water into __(3)__. The __(3)__ drives a set of __(4)__ blades which rotate a __(5)__ to make __(6)__.
Choose word from: electricity, fuels, generator, heat, steam, turbine
Which word is missing from __(2)__? [7i-95]- fuels
- heat
- steam
- turbine
- generator
- electricity
- Fossil __(1)__ are burned to release __(2)__ energy which is used to turn water into __(3)__. The __(3)__ drives a set of __(4)__ blades which rotate a __(5)__ to make __(6)__.
Choose word from: electricity, fuels, generator, heat, steam, turbine
Which word is missing from __(3)__? [7i-96]- fuels
- heat
- steam
- turbine
- generator
- electricity
- Fossil __(1)__ are burned to release __(2)__ energy which is used to turn water into __(3)__. The __(3)__ drives a set of __(4)__ blades which rotate a __(5)__ to make __(6)__.
Choose word from: electricity, fuels, generator, heat, steam, turbine
Which word is missing from __(4)__? [7i-97]- fuels
- heat
- steam
- turbine
- generator
- electricity
- Fossil __(1)__ are burned to release __(2)__ energy which is used to turn water into __(3)__. The __(3)__ drives a set of __(4)__ blades which rotate a __(5)__ to make __(6)__.
Choose word from: electricity, fuels, generator, heat, steam, turbine
Which word is missing from __(5)__? [7i-98]- fuels
- heat
- steam
- turbine
- generator
- electricity
- Fossil __(1)__ are burned to release __(2)__ energy which is used to turn water into __(3)__. The __(3)__ drives a set of __(4)__ blades which rotate a __(5)__ to make __(6)__.
Choose word from: electricity, fuels, generator, heat, steam, turbine
Which word is missing from __(6)__? [7i-99]- fuels
- heat
- steam
- turbine
- generator
- electricity
Solar __(1)__ can convert __(2)__ directly into __(3)__ but they are __(4)__. Dark solar panels fitted in a roof, readily __(5)__ radiation to heat water. A curved __(6)__ can also be used to collect and concentrate the heat radiation to cook food on a barbecue!
Choose word from: absorb, cells, costly, electricity, mirror, sunlight
Which word is missing from __(1)__? [7i-100]- cells
- sunlight
- electricity
- costly
- absorb
- mirror
- Solar __(1)__ can convert __(2)__ directly into __(3)__ but they are __(4)__. Dark solar panels fitted in a roof, readily __(5)__ radiation to heat water. A curved __(6)__ can also be used to collect and concentrate the heat radiation to cook food on a barbecue!
Choose word from: absorb, cells, costly, electricity, mirror, sunlight
Which word is missing from __(2)__? [7i-101]- cells
- sunlight
- electricity
- costly
- absorb
- mirror
- Solar __(1)__ can convert __(2)__ directly into __(3)__ but they are __(4)__. Dark solar panels fitted in a roof, readily __(5)__ radiation to heat water. A curved __(6)__ can also be used to collect and concentrate the heat radiation to cook food on a barbecue!
Choose word from: absorb, cells, costly, electricity, mirror, sunlight
Which word is missing from __(3)__? [7i-102]- cells
- sunlight
- electricity
- costly
- absorb
- mirror
- Solar __(1)__ can convert __(2)__ directly into __(3)__ but they are __(4)__. Dark solar panels fitted in a roof, readily __(5)__ radiation to heat water. A curved __(6)__ can also be used to collect and concentrate the heat radiation to cook food on a barbecue!
Choose word from: absorb, cells, costly, electricity, mirror, sunlight
Which word is missing from __(4)__? [7i-103]- cells
- sunlight
- electricity
- costly
- absorb
- mirror
- Solar __(1)__ can convert __(2)__ directly into __(3)__ but they are __(4)__. Dark solar panels fitted in a roof, readily __(5)__ radiation to heat water. A curved __(6)__ can also be used to collect and concentrate the heat radiation to cook food on a barbecue!
Choose word from: absorb, cells, costly, electricity, mirror, sunlight
Which word is missing from __(5)__? [7i-104]- cells
- sunlight
- electricity
- costly
- absorb
- mirror
- Solar __(1)__ can convert __(2)__ directly into __(3)__ but they are __(4)__. Dark solar panels fitted in a roof, readily __(5)__ radiation to heat water. A curved __(6)__ can also be used to collect and concentrate the heat radiation to cook food on a barbecue!
Choose word from: absorb, cells, costly, electricity, mirror, sunlight
Which word is missing from __(6)__? [7i-105]- cells
- sunlight
- electricity
- costly
- absorb
- mirror
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES 
from the remains of buried and decayed plant remainsrelatively cheap, suitable for big power big stations very polluting from smog and acid rain, non-renewable fossil fuel (115 years left?), carbon dioxide produced 
from plant growth e.g. oils, sugar, wood or from animal dungrenewable from plant and animal resources, can use waste material, less demand on non-renewable resources pollution can be high but does recycle carbon dioxide, no good for big power stations 
, the heat from Sun warms air which risesrenewable, no fuel costs, little pollution, less demand on non-renewable sources, no carbon dioxide produced unreliable due to variable wind speed, no good large scale 
mainly infrared radiationrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced unreliable due to variable sunlight intensity Which words might correspond to the missing
? [7i-106]- COAL
- BIOMASS
- WIND power
- SUNLIGHT for heat
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES from the remains of buried and decayed plant remainsrelatively cheap, suitable for big power big stations very polluting from smog and acid rain, non-renewable fossil fuel (115 years left?), carbon dioxide produced from plant growth e.g. oils, sugar, wood or from animal dungrenewable from plant and animal resources, can use waste material, less demand on non-renewable resources pollution can be high but does recycle carbon dioxide, no good for big power stations , the heat from Sun warms air which risesrenewable, no fuel costs, little pollution, less demand on non-renewable sources, no carbon dioxide produced unreliable due to variable wind speed, no good large scale mainly infrared radiationrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced unreliable due to variable sunlight intensity Which words might correspond to the missing
? [7i-107]- COAL
- BIOMASS
- WIND power
- SUNLIGHT for heat
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES from the remains of buried and decayed plant remainsrelatively cheap, suitable for big power big stations very polluting from smog and acid rain, non-renewable fossil fuel (115 years left?), carbon dioxide produced from plant growth e.g. oils, sugar, wood or from animal dungrenewable from plant and animal resources, can use waste material, less demand on non-renewable resources pollution can be high but does recycle carbon dioxide, no good for big power stations , the heat from Sun warms air which risesrenewable, no fuel costs, little pollution, less demand on non-renewable sources, no carbon dioxide produced unreliable due to variable wind speed, no good large scale mainly infrared radiationrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced unreliable due to variable sunlight intensity Which words might correspond to the missing
? [7i-108]- COAL
- BIOMASS
- WIND power
- SUNLIGHT for heat
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES from the remains of buried and decayed plant remainsrelatively cheap, suitable for big power big stations very polluting from smog and acid rain, non-renewable fossil fuel (115 years left?), carbon dioxide produced from plant growth e.g. oils, sugar, wood or from animal dungrenewable from plant and animal resources, can use waste material, less demand on non-renewable resources pollution can be high but does recycle carbon dioxide, no good for big power stations , the heat from Sun warms air which risesrenewable, no fuel costs, little pollution, less demand on non-renewable sources, no carbon dioxide produced unreliable due to variable wind speed, no good large scale mainly infrared radiationrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced unreliable due to variable sunlight intensity Which words might correspond to the missing
? [7i-109]- COAL
- BIOMASS
- WIND power
- SUNLIGHT for heat
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES NATURAL GAS from the remains of buried and decayed marine organisms reasonably cheap for medium to large scale power stations, quick start up, efficient, convenient to pipe SUNLIGHT for ELECTRICITY directly using visible light renewable, no fuel costs, no pollution, less demand on non-renewable resources, good for remote locations NUCLEAR power from unstable atoms disintegrating suitable for large scale power stations, no carbon dioxide to add to global warming HYDROELECTRIC power from rainwater stored behind dam renewable, no fuel costs, no pollution, no demand on non-renewable resources, fast start up and increase power, no carbon dioxide produced Which words might correspond to the missing
? [7i-110]- medium pollution, carbon dioxide adds to global warming, non-renewable (90 years left?)
- unreliable, no good for large scale power
- toxic radioactive waste, accidents potentially very serious, very costly to build and dismantle, non-renewable
- very costly to build, disruption or removal of wildlife habitat or farmland, limited suitable valley locations
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES NATURAL GAS from the remains of buried and decayed marine organisms reasonably cheap for medium to large scale power stations, quick start up, efficient, convenient to pipe SUNLIGHT for ELECTRICITY directly using visible light renewable, no fuel costs, no pollution, less demand on non-renewable resources, good for remote locations NUCLEAR power from unstable atoms disintegrating suitable for large scale power stations, no carbon dioxide to add to global warming HYDROELECTRIC power from rainwater stored behind dam renewable, no fuel costs, no pollution, no demand on non-renewable resources, fast start up and increase power, no carbon dioxide produced Which words might correspond to the missing
? [7i-111]- medium pollution, carbon dioxide adds to global warming, non-renewable (90 years left?)
- unreliable, no good for large scale power
- toxic radioactive waste, accidents potentially very serious, very costly to build and dismantle, non-renewable
- very costly to build, disruption or removal of wildlife habitat or farmland, limited suitable valley locations
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES NATURAL GAS from the remains of buried and decayed marine organisms reasonably cheap for medium to large scale power stations, quick start up, efficient, convenient to pipe SUNLIGHT for ELECTRICITY directly using visible light renewable, no fuel costs, no pollution, less demand on non-renewable resources, good for remote locations NUCLEAR power from unstable atoms disintegrating suitable for large scale power stations, no carbon dioxide to add to global warming HYDROELECTRIC power from rainwater stored behind dam renewable, no fuel costs, no pollution, no demand on non-renewable resources, fast start up and increase power, no carbon dioxide produced Which words might correspond to the missing
? [7i-112]- medium pollution, carbon dioxide adds to global warming, non-renewable (90 years left?)
- unreliable, no good for large scale power
- toxic radioactive waste, accidents potentially very serious, very costly to build and dismantle, non-renewable
- very costly to build, disruption or removal of wildlife habitat or farmland, limited suitable valley locations
ENERGY RESOURCE for heat or electricity Examples of ADVANTAGES Examples of DISADVANTAGES NATURAL GAS from the remains of buried and decayed marine organisms reasonably cheap for medium to large scale power stations, quick start up, efficient, convenient to pipe SUNLIGHT for ELECTRICITY directly using visible light renewable, no fuel costs, no pollution, less demand on non-renewable resources, good for remote locations NUCLEAR power from unstable atoms disintegrating suitable for large scale power stations, no carbon dioxide to add to global warming HYDROELECTRIC power from rainwater stored behind dam renewable, no fuel costs, no pollution, no demand on non-renewable resources, fast start up and increase power, no carbon dioxide produced Which words might correspond to the missing
? [7i-113]- medium pollution, carbon dioxide adds to global warming, non-renewable (90 years left?)
- unreliable, no good for large scale power
- toxic radioactive waste, accidents potentially very serious, very costly to build and dismantle, non-renewable
- very costly to build, disruption or removal of wildlife habitat or farmland, limited suitable valley locations
ENERGY RESOURCE for heat or electricity: Examples of ADVANTAGES and Examples of DISADVANTAGES
from the up-down movement due to windrenewable, no fuel costs, no pollution, no demand on non-renewable resources unreliable, storm damage from the remains of buried and decayed marine organismslots of it at the moment, relatively cheap, ok for big power big stations, easy to pipe around polluting from smog and acid rain, non-renewable fossil fuel (80 years left?), adds to global warming from the mass movement of water due to gravity pull of the moonrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced very costly to build, disruption of wildlife habitat, limited suitable estuary locations, cannot generate power when tides are turning (about 10 useful hours?) from hot rocks underground in active/recent volcanic regionsrenewable energy resource, no fuel costs, little pollution, no carbon dioxide limited suitable locations Which words might correspond to the missing
? [7i-114]- WAVE power
- CRUDE OIL
- TIDAL barrage
- GEOTHERMAL
ENERGY RESOURCE for heat or electricity: Examples of ADVANTAGES and Examples of DISADVANTAGES
from the up-down movement due to windrenewable, no fuel costs, no pollution, less demand on non-renewable sources, no carbon dioxide to increase Greenhouse effect unreliable due to variable wave height, storm damage from the remains of buried and decayed marine organismslots of it at the moment, relatively cheap, ok for big power big stations, easy to pipe around polluting from smog and acid rain, non-renewable fossil fuel (80 years left?), produces carbon dioxide adding to global warming from the mass movement of water due to gravity pull of the moonrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced very costly to build, disruption of wildlife habitat, limited suitable estuary locations, cannot generate power when tides are turning (about 10 useful hours?) from hot rocks underground in active/recent volcanic regionsrenewable energy resource, no fuel costs, little pollution, no carbon dioxide limited suitable locations Which words might correspond to the missing
? [7i-115]- WAVE power
- CRUDE OIL
- TIDAL barrage
- GEOTHERMAL
ENERGY RESOURCE for heat or electricity: Examples of ADVANTAGES and Examples of DISADVANTAGES
from the up-down movement due to windrenewable, no fuel costs, no pollution, less demand on non-renewable sources, no carbon dioxide to increase Greenhouse effect unreliable due to variable wave height, storm damage from the remains of buried and decayed marine organismslots of it at the moment, relatively cheap, ok for big power big stations, easy to pipe around polluting from smog and acid rain, non-renewable fossil fuel (80 years left?), produces carbon dioxide adding to global warming from the mass movement of water due to gravity pull of the moonrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced very costly to build, disruption of wildlife habitat, limited suitable estuary locations, cannot generate power when tides are turning (about 10 useful hours?) from hot rocks underground in active/recent volcanic regionsrenewable energy resource, no fuel costs, little pollution, no carbon dioxide limited suitable locations Which words might correspond to the missing
? [7i-116]- WAVE power
- CRUDE OIL
- TIDAL barrage
- GEOTHERMAL
ENERGY RESOURCE for heat or electricity: Examples of ADVANTAGES and Examples of DISADVANTAGES
from the up-down movement due to windrenewable, no fuel costs, no pollution, less demand on non-renewable sources, no carbon dioxide to increase Greenhouse effect unreliable due to variable wave height, storm damage from the remains of buried and decayed marine organismslots of it at the moment, relatively cheap, ok for big power big stations, easy to pipe around polluting from smog and acid rain, non-renewable fossil fuel (80 years left?), produces carbon dioxide adding to global warming from the mass movement of water due to gravity pull of the moonrenewable, no fuel costs, little pollution, less demand on non-renewable resources, no carbon dioxide produced very costly to build, disruption of wildlife habitat, limited suitable estuary locations, cannot generate power when tides are turning (about 10 useful hours?) from hot rocks underground in active/recent volcanic regionsrenewable energy resource, no fuel costs, little pollution, no carbon dioxide limited suitable locations Which words might correspond to the missing
? [7i-117]- WAVE power
- CRUDE OIL
- TIDAL barrage
- GEOTHERMAL
- [7i-118] A polythene rod is rubbed with a cloth. What sort of energy store is created?
- electrostatic energy store
- magnetic energy store
- kinetic energy store
- chemical energy store
- [7i-119] An night storage heater is uses cheaper off-peak electricity. What sort of energy store is created?
- electrostatic energy store
- thermal energy store
- electrical energy store
- chemical energy store
- [7i-120] A mobile phone battery is charged up. What sort of energy store is created?
- electrostatic energy store
- thermal energy store
- electrical energy store
- chemical energy store
- Which form of energy does the Sun provide for a solar panel, an array of solar cells? [9i-1]
- visible light radiation
- kinetic radiation
- chemical radiation
- nuclear radiation
Which form of energy does vibrating material produce? [9i-2]- electrical
- sound
- chemical
- nuclear
Which form of energy is stored in a battery? [9i-3]- heat/thermal
- electrical
- chemical
- nuclear
Which form of energy is released when an atom splits? [9i-4]- gravitational potential
- sound
- chemical
- nuclear
Which form of energy is stored in a clock spring? [9i-5]- elastic/strain potential
- gravitational potential
- electrical potential
- chemical potential
- Which form of energy is due to movement? [9i-6]
- elastic/strain potential
- kinetic
- electrical
- light
Which form of energy is produced by a generator? [9i-7]- elastic/strain potential
- nuclear
- electrical
- light
Which form of energy does the eye respond to? [9i-8]- elastic/strain potential
- kinetic
- electrical
- light
- Which form of energy is to do with water held by a dam? [9i-9]
- gravitational potential
- heat/thermal
- kinetic
- chemical
- Which form of energy comes from a convector heater? [9i-10]
- gravitational potential
- thermal
- electrical
- chemical
- Which form of energy comes from a loudspeaker? [9i-11]
- elastic potential
- heat/thermal
- sound
- electrical
- Which form of energy is stored in cylinder of butane gas? [9i-12]
- gravitational potential
- heat/thermal
- kinetic
- chemical
- Which form of energy is released by uranium and plutonium in an atomic reactor? [9i-13]
- nuclear
- chemical
- kinetic
- electrical
- Which form of energy is stored in a bow and arrow before release? [9i-14]
- sound
- elastic/strain potential
- kinetic
- heat/thermal
Which form of energy has a bullet fired from a gun? [9i-15]- nuclear
- elastic/strain potential
- kinetic
- chemical
- Which form of energy is carried by a current of moving charge? [9i-16]
- nuclear
- elastic/strain potential
- kinetic
- electrical
- Which form of energy is needed for photosynthesis? [9i-17]
- light
- gravitational potential
- kinetic
- electrical
- Which form of energy is stored by a lift on the top floor? [9i-18]
- elastic/strain potential
- gravitational potential
- kinetic
- electrical
One unit of electricity is equal to using a 1000W (a power of 1kW) appliance for 1 hour. [9i-19] What is the cost of using a 1.5kW heater for 2 hours if the cost of electricity is 7p/unit?- 10.5p
- 3.5p
- 21.0p
- 7.0p
- One unit of electricity is equal to using a 1000W (a power of 1kW) appliance for 1 hour. [9i-20] What is the cost of using a 3 kW heater for 6 hours if the cost of electricity is 6p/unit?
- 54p
- £2.16
- 36p
- £1.08
- One unit of electricity is equal to using a 1000W (a power of 1kW) appliance for 1 hour. [9i-21] What is the cost of using a 60W light bulb for 20 hours if the cost of electricity is 5p/unit?
- 6p
- £6.00
- £1.20
- 60p
- One unit of electricity is equal to using a 1000W (a power of 1kW) appliance for 1 hour. [9i-22] What is the cost of using a 700W iron for 2.5 hours if the cost of electricity is 8p/unit?
- 7.0p
- 14p
- 160p
- 3p
- One unit of electricity is equal to using a 1000W (a power of 1kW) appliance for 1 hour. [9i-23] What is the cost of using a 200W hair dryer for 10 minutes if the cost of electricity is 6p/unit?
- 2p
- 1.2p
- 0.2p
- 12p
- One unit of electricity is equal to using a 1000W (a power of 1kW) appliance for 1 hour. [9i-24] What is the cost of using a 4kW oven for 5 hours if the cost of electricity is 7p/unit?
- £0.70
- 20p
- 35p
- £1.40
What is the overall energy change using a loudspeaker? [9i-25]- electrical to sound
- sound to electrical
- chemical to kinetic
- light to electrical
What is the overall energy change using a microphone? [9i-26]- electrical to sound
- sound to electrical
- chemical to kinetic
- light to electrical
What is the overall energy change using a racing car? [9i-27]- electrical to sound
- sound to electrical
- chemical to kinetic
- light to electrical
What is the overall energy change using a solar cell? [9i-28]- electrical to sound
- sound to electrical
- chemical to kinetic
- light to electrical
What are the energy changes when using a lift to go to an upper floor in a block of flats? [9i-29]- electrical => kinetic => gravitational potential energies
- chemical => thermal (heat) => kinetic => electrical => heat/thermal energies
- chemical => kinetic => gravitational potential energies
- chemical => kinetic => elastic potential energies
What are the energy changes for using a diesel generator to operate an electrical appliance? [9i-30]- electrical => kinetic => gravitational potential energies
- chemical => thermal (heat) => kinetic => electrical => heat/thermal energies
- chemical => kinetic => thermal => electrical
- chemical => kinetic => elastic potential energies
What are the energy changes when a football is kicked up into the air? [9i-31]- electrical => kinetic => gravitational potential energies
- chemical => thermal (heat) => kinetic => electrical => heat/thermal energies
- chemical => kinetic => gravitational potential energies
- chemical => kinetic => elastic potential energies
What are the energy changes when winding up a clock? [9i-32]- electrical => kinetic => gravitational potential energies
- chemical => thermal (heat) => kinetic => electrical => heat/thermal energies
- chemical => kinetic => gravitational potential energies
- chemical => kinetic => elastic potential energies
Left is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. The main overall useful energy change from the diesel engine is? [9i-33]- chemical to kinetic energy
- kinetic to gravitational potential energy
- gravitational potential to kinetic energy
- kinetic to heat energy
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. The main energy change happening at points (2) and (6) is? [9i-34]- chemical to kinetic energy
- kinetic to gravitational potential energy
- gravitational potential to kinetic energy
- kinetic to heat/thermal energy
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. The main energy change happening at points (4) and (8) is? [9i-35]- chemical to kinetic energy
- kinetic to gravitational potential energy
- gravitational potential to kinetic energy
- kinetic to heat/thermal energy
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. The main energy change happening at point (9) is? [9i-36]- chemical to kinetic energy
- kinetic to gravitational potential energy
- gravitational potential to kinetic energy
- kinetic to heat/thermal energy
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. The main force acting after point (9) is? [9i-37]- braking - friction
- gravity
- magnetic
- friction - air resistance
- Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. The main force acting at points (4) and (8) is? [9i-38]
- braking - friction
- gravity
- magnetic
- friction - air resistance
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. At which point does the ride car have the least useful gravitational potential energy and zero kinetic energy? [9i-39]- point (3)
- point (5)
- point (1)
- point (8)
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. At which point does the ride car have about equal amounts useful gravitational potential energy and kinetic energy? [9i-40]- point (3)
- point (5)
- point (7)
- point (4)
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. At which point does the ride car have zero kinetic energy? [9i-41]- point (1)
- point (7)
- point (5)
- point (9)
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. At which point does the ride car have the most useful gravitational potential energy? [9i-42]- point (1)
- point (3)
- point (7)
- point (4)
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. At which point does the ride car have the most kinetic energy? [9i-43]- point (8)
- point (3)
- point (5)
- point (4)
Above is a basic design of a ride, starting with the car being pulled to the top of a hill, falling down the hill, passing through the loop and brought to a halt by applying a brake pad system. At which point does the ride car have the least useful gravitational potential energy and the most kinetic energy? [9i-44]- point (4)
- point (3)
- point (8)
- point (5)
- Wind generators are a useful energy resource to provide small scale power for a group of houses. Which is NOT true about this situation? [9i-45]
- the overall energy change is heat to electrical energy
- it is a renewable energy resource because the wind blows regularly
- as an energy resource, it is advantage that there is little pollution compared to using fossil fuels
- as the wind is uncertain, it is a disadvantage compared to using fossil fuels
- Wind generators are a useful energy resource to provide small scale power for a group of houses. Which is NOT true about this situation? [9i-46]
- the overall energy change is kinetic to electrical energy
- it is a renewable energy resource because the wind blows regularly
- as an energy resource, it is advantage that there is little pollution compared to using fossil fuels
- as the wind is uncertain, it is a disadvantage compared to using fossil fuels
- Wind generators are a useful energy resource to provide small scale power for a group of houses. Which is NOT true about this situation? [9i-47]
- the overall energy change is kinetic to electrical energy
- it is a renewable energy resource because the wind blows regularly
- just because there is little pollution, it has no great advantage compared to using fossil fuels as an energy source
- as the wind is uncertain, it is a disadvantage compared to using fossil fuels as an energy source
- Wind generators are a useful energy resource to provide small scale power for a group of houses. Which is NOT true about this situation? [9i-48]
- the overall energy change is kinetic to electrical energy
- it is a renewable energy resource because the wind blows regularly
- as an energy resource, it is advantage that there is little pollution compared to using fossil fuels
- as the is wind fairly constant, it is an advantage compared to using fossil fuels
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-49]- 95% of the electrical energy in the lamp is useful heat
- the electric kettle is the most energy efficient appliance with least wasted energy
- the food mixer converts 40% of the electrical energy into useful kinetic energy
- The HiFi wastes 70% of the electrical energy, mainly as heat or thermal energy
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-50]- 95% of the electrical energy is wasted as heat by the lamp by conduction and radiation
- the electric kettle is the least energy efficient appliance with least wasted energy
- the food mixer converts 40% of the electrical energy into useful kinetic energy
- The HiFi wastes 70% of the electrical energy, mainly as heat or thermal energy
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-51]- 95% of the electrical energy is wasted as heat by the lamp by conduction and radiation
- the electric kettle is the most energy efficient appliance with least wasted energy
- the food mixer converts 40% of the electrical energy into useful heat energy
- The HiFi wastes 70% of the electrical energy, mainly as heat or thermal energy
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-52]- 95% of the electrical energy is wasted as heat by the lamp by conduction and radiation
- the electric kettle is the most energy efficient appliance with least wasted energy
- the food mixer converts 40% of the electrical energy into useful kinetic energy
- The HiFi wastes 50% of the electrical energy, mainly as heat or thermal energy
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-53]- the lamp is the most efficient appliance with the least wasted energy
- 3% of the electrical energy is wasted by the kettle, mainly by conduction and convection losses
- the food mixer converts about 60% of the electrical energy into heat and sound energy
- The HiFi produces sound energy that is not wasted
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-54]- the lamp is the least efficient appliance with the most wasted energy
- 3% of the electrical energy is wasted by the kettle, mainly by leaked conduction of electrical charge or current
- the food mixer converts about 60% of the electrical energy into heat and sound energy
- The HiFi produces sound energy that is not wasted
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-55]- the lamp is the least efficient appliance with the most wasted energy
- 3% of the electrical energy is wasted by the kettle, mainly by conduction and convection losses
- the food mixer converts about 40% of the electrical energy into useful heat and sound energy
- The HiFi produces sound energy that is not wasted
- In the home electrical energy is converted into useful forms by various appliances. Four examples (1)-(4) are listed below, including what happens to a % of the original electrical energy. Which statement of A-D is most likely NOT true?
Examples:
(1) A lamp coverts 5% of the energy into light.
(2) A kettle uses 97% of the energy to heat the water.
(3) A typical food mixer wastes 60% of the energy input.
(4) A HiFi system converts 30% of the energy into sound and light. [9i-56]- the lamp is the least efficient appliance with the most wasted energy
- 3% of the electrical energy is wasted by the kettle, mainly by conduction and convection losses
- the food mixer converts about 60% of the electrical energy into heat and sound energy
- The HiFi produces sound energy that is wasted
Mobile phones operate on a charged up battery system. Which energy transfer corresponds to listening to recorded message? [9i-57]- chemical => electrical => sound
- electrical => chemical
- chemical => electrical => light
- light => electrical => sound
- Mobile phones operate on a charged up battery system. Which energy transfer corresponds to charging the battery? [9i-58]
- chemical => electrical => sound
- electrical => chemical
- chemical => electrical => light
- light => electrical
- Mobile phones operate on a charged up battery system. Which energy transfer corresponds to receiving a text message? [9i-59]
- chemical => electrical => sound
- electrical => chemical => light
- chemical => electrical => light
- light => electrical
- Mobile phones operate on a charged up battery system. Which energy transfer corresponds to recording pictures to transmit? [9i-60]
- chemical => electrical => sound
- electrical => chemical
- chemical => electrical => light
- light => electrical
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the largest voltage? [9h-61]- magnesium and silver electrodes
- zinc and iron electrodes
- magnesium and zinc electrodes
- zinc and tin electrodes
-
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the smallest voltage? [9h-62]- magnesium and silver electrodes
- zinc and iron electrodes
- magnesium and zinc electrodes
- zinc and tin electrodes
-
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the biggest voltage? [9h-63]- zinc and copper electrodes
- zinc and tin electrodes
- magnesium and copper electrodes
- tin and lead electrodes
-
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the smallest voltage? [9h-64]- zinc and copper electrodes
- zinc and tin electrodes
- magnesium and copper electrodes
- tin and lead electrodes
A simple battery (cell) can be made by dipping two different strips of metal (electrodes) into a conducting salt solution of ions. Which statement is TRUE about the battery cell? [9h-65]- the closer the two metals are in reactivity, the smaller the voltage produced
- an electrical current cannot flow through the salt solution of ions
- the smaller the metal electrodes the bigger the current
- the energy transfer change is from electrical to chemical energy
- A simple battery (cell) can be made by dipping two different strips of metal (electrodes) into a conducting salt solution of ions. Which statement is TRUE about the battery cell? [9h-66]
- the closer the two metals are in reactivity, the bigger the voltage produced
- an electrical current can flow through the salt solution of ions
- the smaller the metal electrodes the bigger the current
- the energy transfer change is from electrical to chemical energy
- A simple battery (cell) can be made by dipping two different strips of metal (electrodes) into a conducting salt solution of ions. Which statement is TRUE about the battery cell? [9h-67]
- the closer the two metals are in reactivity potential, the bigger the voltage produced
- an electrical current cannot flow through the salt solution of ions
- the bigger the metal electrodes the bigger the current
- the energy transfer change is from electrical to chemical energy
- A simple battery (cell) can be made by dipping two different strips of metal (electrodes) into a conducting salt solution of ions. Which statement is TRUE about the battery cell? [9h-68]
- the closer the two metals are in reactivity, the bigger the voltage produced
- an electrical current cannot flow through the salt solution of ions
- the smaller the metal electrodes the bigger the current
- the energy transfer change is from chemical to electrical energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which type of energy resource produces electrical energy from a torch battery? [9i-69]
- chemical energy
- sunlight energy
- kinetic energy
- heat energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity in a calculator solar cell? [9i-70]
- chemical energy
- sunlight energy
- kinetic energy
- heat energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity using a wind turbine? [9i-71]
- chemical energy
- geothermal energy
- kinetic energy
- gravitational potential energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity in a geothermal power station? [9i-72]
- chemical energy
- sunlight energy
- gravitational potential energy
- heat energy
Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity from a diesel/petrol generator? [9i-73]- chemical energy
- sunlight energy
- kinetic energy
- gravitational potential energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity from a mountain stream turbine generator? [9i-74]
- chemical energy
- gravitational potential energy
- solar radiation energy
- heat energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity from a river paddle wheel generator? [9i-75]
- chemical energy
- solar radiation energy
- kinetic energy
- heat energy
- Various sorts of energy resources can be used to produce electricity for use in the home. Which of the following types of energy resource is used to make electricity inside a clockwork radio? [9i-76]
- chemical energy
- gravitational potential energy
- heat energy
- elastic potential energy
- Various sorts of energy transfers occur when generating and using electricity. Which of the following energy transfers happens in a hydroelectric power station? [9i-77]
- gravitational potential => kinetic => electrical energy
- chemical => heat => kinetic => electrical energy
- heat => kinetic => electrical energy
- elastic potential => kinetic => electrical energy
- Various sorts of energy transfers occur when generating and using electricity. Which of the following energy transfers happens in a fossil fuel power station? [9i-78]
- gravitational potential => kinetic => electrical energy
- chemical => heat => kinetic => electrical energy
- heat => kinetic => electrical energy
- elastic potential => kinetic => electrical energy
- Various sorts of energy transfers occur when generating and using electricity. Which of the following energy transfers happens in a geothermal power station? [9i-79]
- gravitational potential => kinetic => electrical energy
- chemical => heat => kinetic => electrical energy
- heat => kinetic => electrical energy
- elastic potential => kinetic => electrical energy
- Various sorts of energy transfers occur when generating and using electricity. Which of the following energy transfers happens in a clockwork radio? [9i-80]
- gravitational potential => kinetic => electrical energy
- chemical => heat => kinetic => electrical energy
- heat => kinetic => electrical energy
- elastic potential => kinetic => electrical energy
electrical energy => useful/wasted energy outputs energy input transfers as a 3 J/s of wasted sound energy of 600 J/s to hair dryer 590 J/s of useful heat energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the hair dryer is in use? [9i-81]
- 7 J/s of useful kinetic energy
- 7 J/s of wasted potential energy
- 5 J/s of wasted kinetic energy
- 5 J/s of useful potential energy
electrical energy => useful/wasted energy outputs energy input transfers as a 5 J/s of useful kinetic energy of 400 J/s to hair dryer 393 J/s of useful heat energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the hair dryer is in use? [9i-82]
- 2 J/s of useful kinetic energy
- 2 J/s of wasted sound energy
- 1 J/s of wasted kinetic energy
- 1 J/s of useful potential energy
electrical energy => useful/wasted energy outputs input energy transfers as a 4 J/s of useful kinetic energy of 300 J/s to hair dryer 1 J/s of wasted sound energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the hair dryer is in use? [9i-83]
- 290 J/s of wasted kinetic energy
- 295 J/s of wasted heat energy
- 200 of J/s of useful heat energy and 95 J/s of wasted heat energy
- 200 J/s of useful potential energy and 95 J/s of wasted heat energy
electrical energy => useful/wasted energy outputs input energy transfers as a 50 J/s of wasted sound energy of 1000 J/s to food mixer 400 J/s of useful kinetic energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the food mixer is in use? [9i-84]
- 550 J/s of wasted kinetic energy
- 300 J/s of useful heat and 250 J/s of wasted kinetic energy
- 300 J/s of useful heat and 350 J/s of wasted potential energy
- 550 J/s of wasted heat energy
electrical energy => useful/wasted energy outputs input energy transfers as a 80 J/s of wasted sound energy of 1200 J/s to food mixer 620 J/s of wasted heat energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the food mixer is in use? [9i-85]
- 500 J/s of useful kinetic energy
- 500 J/s of useful potential energy
- 300 J/s of useful heat and 280 J/s of wasted potential energy
- 580 J/s of wasted heat energy
electrical energy => useful/wasted energy outputs input energy transfers as a 370 J/s of useful kinetic energy of 800 J/s to food mixer 400 J/s of wasted heat energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the food mixer is in use? [9i-86]
- 30 J/s of wasted kinetic energy
- 30 J/s of wasted sound energy
- 20 J/s of useful heat energy
- 130 J/s of wasted heat energy
electrical energy => useful/wasted energy outputs input energy transfers as a 2 J/s of useful kinetic energy of 200 J/s CD-HiFi system 192 J/s of wasted heat energy to the is being 5 J/s of useful sound energy appliance used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the CD-HiFi system is in use? [9i-87]
- 2 J/s of wasted light energy
- 2 J/s of wasted sound energy
- 1 J/s of useful light energy
- 1 J/s of useful heat energy
electrical energy => useful/wasted energy outputs input energy transfers as a 4 J/s of useful kinetic energy of 500 J/s CD-HiFi system 2 J/s of useful light energy to the is being 464 J/s of wasted heat energy appliance used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the CD-HiFi system is in use? [9i-88]
- 30 J/s of wasted light energy
- 28 J/s of wasted sound energy
- 28 J/s of useful potential energy
- 30 J/s of useful sound energy
electrical energy => useful/wasted energy outputs input energy transfers as a 3 J/s of useful kinetic energy of 400 J/s CD-HiFi system 1 J/s of useful light energy to the is being 20 J/s of useful sound energy appliance used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the CD-HiFi system is in use? [9i-89]
- 376 J/s of wasted heat energy
- 300 J/s of useful heat energy and 66 J/s of useful potential energy
- 376 J/s of useful potential energy
- 290 J/s of wasted sound energy and 76 J/s wasted kinetic energy
electrical energy => useful/wasted energy outputs input energy transfers as a 287.5 J/s of wasted heat energy of 300 J/s CD-HiFi system 0.5 J/s of useful light energy to the is being 10.0 J/s of useful sound energy appliance used ? J/s of useful ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the CD-HiFi system is in use? [9i-90]
- 2.5 J/s of useful heat energy
- 2.0 J/s of useful kinetic energy
- 1.5 J/s of useful potential energy
- 1.5 J/s of wasted sound and 1.5 J/s wasted kinetic energy
electrical energy => useful/wasted energy outputs input energy transfers as a 1200 J/s of useful kinetic energy of 3000 J/s to washing machine 10 J/s of wasted sound energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the washing machine is in use? [9i-91]
- 1800 J/s of wasted kinetic energy
- 1790 J/s of useful potential energy
- 1300 J/s of useful heat energy and 490 J/s of wasted heat energy
- 1200 J/s of useful potential energy and 580 J/s of wasted heat energy
electrical energy => useful/wasted energy outputs input energy transfers as a 5 J/s of wasted sound energy of 2000 J/s to washing machine 1485 J/s of useful/wasted heat energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the washing machine is in use? [9i-92]
- 500 J/s of wasted kinetic energy
- 510 J/s of useful potential energy
- 500 J/s of useful potential and 10 J/s of wasted potential energy
- 510 J/s of useful kinetic energy
electrical energy => useful/wasted energy outputs input energy transfers as a 900 J/s of kinetic energy of 2500 J/s to washing machine 1593 J/s of useful/wasted heat energy the appliance is being used ? J/s of ? energy The table summarises what happens to the energy input and output of an electrical appliance. Which is the most likely missing quantity and form of output energy when the washing machine is in use? [9i-93]
- 7 J/s of wasted sound energy
- 7 J/s of useful potential energy
- 5 J/s of wasted kinetic energy
- 5 J/s of useful potential energy
- [7i-214] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to you sweeping the floor?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-215] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to operation of a petrol car?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-216] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to climbing a hill?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-217] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to using a gas cooker?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-218] Energy can be transferred from one energy store to another energy store by various means. Apart from electricity, which type of energy transfer applies to boiling a kettle of water?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-219] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to placing butter on a hot plate?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-220] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to a battery operated torch?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-221] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to a battery operated toy car?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-222] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to infrared room heater?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-223] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to a solar panel?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-224] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to using a digital camera?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-225] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to using a thermal imaging camera?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-226] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to you listening to music?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-227] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to the release of energy by earthquakes?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-228] Energy can be transferred from one energy store to another energy store by various means. Which type of energy transfer applies to scanning a foetus or unborn baby?
- mechanically
- by heating
- electrically
- by radiation
- by sound
- [7i-229] Which of the following energy store changes applies to hydroelectric power generation?
- gravitational potential energy ==> kinetic energy ==> electrical energy
- chemical energy ==> kinetic energy ==> thermal energy
- chemical energy ==> electrical energy ==> kinetic energy
- chemical energy ==> elastic potential energy ==> kinetic energy
- [7i-230] Which of the following energy store changes applies to a falling object hitting the ground?
- gravitational potential energy ==> kinetic energy ==> thermal energy
- chemical energy ==> kinetic energy ==> thermal energy
- gravitational potential energy ==> electrical energy ==> kinetic energy
- chemical energy ==> elastic potential energy ==> kinetic energy
- [7i-231] Which of the following energy store changes applies to an athlete in action?
- gravitational potential energy ==> kinetic energy ==> heat
- chemical energy ==> kinetic energy ==> thermal energy
- chemical energy ==> electrical energy ==> kinetic energy
- thermal energy ==> elastic potential energy ==> kinetic energy
- [7i-232] Which of the following energy store changes applies to a battery operated fan?
- gravitational potential energy ==> kinetic energy
- chemical energy ==> kinetic energy ==> thermal energy
- chemical energy ==> electrical energy ==> kinetic energy
- electrical energy ==> elastic potential energy ==> kinetic energy
- [7i-233] Which of the following energy store changes applies to someone firing a catapult?
- gravitational potential energy ==> kinetic energy
- chemical energy ==> kinetic energy ==> thermal energy
- chemical energy ==> electrical energy ==> kinetic energy
- chemical energy ==> elastic potential energy ==> kinetic energy
- [7i-234] Which of the following energy store changes applies to using a toboggan?
- chemical energy ==> gravitational potential energy ==> kinetic energy
- chemical energy ==> kinetic energy ==> thermal energy
- chemical energy ==> electrical energy ==> kinetic energy
- chemical energy ==> elastic potential energy ==> kinetic energy
- [7i-235] Which of the following energy store changes applies to operating a lift?
- electrical energy ==> kinetic energy ==> gravitational potential energy
- chemical energy ==> kinetic energy ==> thermal energy
- chemical energy ==> electrical energy ==> kinetic energy
- electrical energy ==> elastic potential energy ==> kinetic energy
- [7i-236] Which of the following energy store changes applies to operating a gas fired turbine generator?
- gravitational potential energy ==> chemical energy ==> kinetic energy ==> electrical energy
- chemical energy ==> kinetic energy ==> thermal energy ==> electrical energy
- thermal energy ==> chemical energy ==> electrical energy ==> kinetic energy
- chemical energy ==> thermal energy ==> kinetic energy ==> electrical energy
- [7i-237] Calculate the work done when a force of 50 N acts through a distance of 150 m?
- 7500 J
- 3 kJ
- 300 J
- 75 kJ
- [7i-238] Calculate the work done when a force of 25 N acts through a distance of 125 m?
- 3125 J
- 5 kJ
- 4500 J
- 75 kJ
- [7i-239] Calculate the gravitational energy stored when a weight of 80 N is raised up by 120 m?
- 9.6 kJ
- 1.5 kJ
- 0.96 J
- 0.66 kJ
- [7i-240] Calculate the gravitational energy stored when a grandfather flock weight of 5.0 N is wound upwards by 150 cm?
- 7.5 J
- 750 J
- 7.5 kJ
- 75 kJ
- [7i-241] What force is needed to overcome friction and move an object horizontally 2.5 m only using 500 J of energy?
- 1250 N
- 200 N
- 0.005 N
- 750 N
- [7i-242] What force is needed to overcome friction and move an object horizontally 3.0 m only using 2400 J of energy?
- 7200 N
- 800 N
- 0.8 N
- 0.72 N
- [7i-243] What force is needed to overcome friction and move an object horizontally 50 m only using 250 J of energy?
- 12500 N
- 5.0 N
- 0.2 N
- 750 N
- [7i-244] What force is needed to overcome friction and move an object horizontally 16 m only using 320 J of energy?
- 5120 N
- 20 N
- 0.05 N
- 40 N
- [7i-245] How far can an object be pushed horizontally, to overcome a friction force of 80 N, using 400 J of energy?
- 32 000 m
- 0.20 m
- 5.0 m
- 320 m
- [7i-246] How far can an object be pushed horizontally, to overcome a friction force of 5.0 N, using 8.0 J of energy?
- 40 m
- 0.625 m
- 1.6 m
- 400 m
- [7i-247] How far can an object be pushed horizontally, to overcome a friction force of 250 N, using 5000 J of energy?
- 0.05 m
- 50.0 m
- 20.0 m
- 2000 m
- [7i-248] How far can an object be pushed horizontally, to overcome a friction force of 80 N, using 240 J of energy?
- 19 200 m
- 0.33 m
- 3.0 m
- 19.2 m
[7i-249] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a machine, is distributed in terms of useful energy and waste energy outputs. Which is likely to be the percentage for the wasted sound energy?- 30%
- 27%
- 56%
- 17%
[7i-250] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a machine, is distributed in terms of useful energy and waste energy outputs. Which is likely to be the percentage for the wasted thermal energy?- 50%
- 17%
- 56%
- 27%
[7i-251] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a machine, is distributed in terms of useful energy and waste energy outputs. Which is likely to be the percentage for the useful energy transferred?- 40%
- 27%
- 17%
- 56%
[7i-252] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a machine, is distributed in terms of useful energy and waste energy outputs. Which is the primary cause of the 44% wasted energy?- gravitational field effect
- magnetic field effect
- effect of electrical resistance
- friction effect
[7i-253] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a cooling fan, is distributed in terms of useful energy and waste energy outputs. What is the percentage wasted thermal heat energy transferred?- 10%
- 5%
- 30%
- 15 %
[7i-254] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a cooling fan, is distributed in terms of useful energy and waste energy outputs. What is the percentage wasted sound energy transferred?- 30%
- 10%
- 15%
- 5%
[7i-255] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a cooling fan, is distributed in terms of useful energy and waste energy outputs. What is the percentage useful kinetic energy transferred?- 90%
- 15%
- 40%
- 80%
[7i-256] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a cooling fan, is distributed in terms of useful energy and waste energy outputs. What is the primary cause of the wasted energy?- gravitational field effect
- magnetic field effect
- effect of electrical resistance
- friction effect
[7i-257] An 800W cooling fan, used for two minutes, transfers 96.0 kJ of electrical energy to kinetic, thermal and sound energy stores. From the diagram work out how much energy is wasted due to vibrations?- 5.0 kJ
- 9.6 kJ
- 14.4 kJ
- 4.8 kJ
[7i-258] An 800W cooling fan, used for two minutes, transfers 96.0 kJ of electrical energy to kinetic, thermal and sound energy stores. From the diagram work out how much energy is wasted thermal energy?- 15.0 kJ
- 28.8 kJ
- 7.2 kJ
- 14.4 kJ
[7i-259] An 800W cooling fan, used for two minutes, transfers 96.0 kJ of electrical energy to kinetic, thermal and sound energy stores. From the diagram work out how much energy is useful kinetic energy?- 38.4 kJ
- 80.0 kJ
- 70.0 kJ
- 76.8 kJ
[7i-260] An 800W cooling fan, used for two minutes, transfers 96 kJ of electrical energy to kinetic, thermal and sound energy stores. What is the primary cause of the wasted energy?- gravitational field effect
- magnetic field effect
- effect of electrical resistance
- friction effect
[7i-261] The Sankey diagram above, shows how the input energy transferred by an electric motor operating a cooling fan, is distributed in terms of useful energy and waste energy outputs. From the diagram work out the percentage of non-useful dissipated energy?- 15%
- 5%
- 30%
- 20 %
[7i-262] An 800W cooling fan, used for two minutes, transfers 96.0 kJ of electrical energy to kinetic, thermal and sound energy stores. From the diagram work out the non-useful dissipated energy?- 5.0 kJ
- 4.8 kJ
- 14.4 kJ
- 19.2 kJ