pollution1.gifmulti-word fill quiz 9Gwf3 on "Environmental chemistry"
(a doc brown worksheet for QCA KS3 science-chemistry)

Site Meter* Do online OR printout, do, return to check answers. * KS3 Science Index * EMAIL comment?query * Doc Brown's Chemistry updated June 11th 2009 *

   acid      acidity      alkaline      atmosphere      catalytic      climate      concern      converter      effect      fossil      fuel      greenhouse      layer      lime      melting      monitoring      ozone      pollution      rain      rise      ultraviolet      warming   
1. There is a need to reduce the in our environment by trying to control the emissions and the effects of the ' ' gases (nitrogen and sulphur oxides).

2. In motor vehicles this can be done using a in the exhaust pipe system.

3. In power stations the acidic oxides of sulphur and nitrogen can be removed from the smoke by treating it with an slurry of .

4. The effects and level of pollution can be checked with instuments and living organisms like lichens are also good indicators of levels of in the atmosphere.

5. Apart from the problems caused by acid rain, there is also about rising levels of carbon dioxide in the . This may lead to 'global ' which will affect the around the world perhaps causing more violent weather. It may also cause the the polar ice-cap causing sea levels to and flooding of low lying land areas.

6. This warming up is also called the ' ' and should not be confused with the destruction of the , which stops much of the harmful radiation from reaching the Earth's surface.