What are the four stages of evolution of the earth?
1. Volcanic activity 2. Earth cooled, water vapour condensed to form oceans 3. Photosynthesis removes Co2 and adds O2 4. Carbon dioxide dissolved in oceans and form sedimentary rocks
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What are pollutants?
Chemicals that harm the environment and humans
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Two natural process to remove carbon dioxide from the atmosphere?
Photosynthesis and dissolving in the oceans
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What is a compound?
When two or more elements chemically combine
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What is combustion?
Burning
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What is complete combustion?
It is when there is enough oxygen present to burn a fuel completely
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What is incomplete combustion?
When there isn't enough oxygen present to burn the fuel.
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What do sulfur dioxide and nitrogen dioxide react with to form acid rain?
Water
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Give three ways to reduce power station pollution?
Use less electricity, Use alternative renewable sources, wet scrubbing
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Three ways of reducing car pollution?
Legal limits for exhaust emissions, Use public transport, Make sure cars have catalytic convertors
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Other cards in this set
Card 2
Front
What are the four stages of evolution of the earth?
Back
1. Volcanic activity 2. Earth cooled, water vapour condensed to form oceans 3. Photosynthesis removes Co2 and adds O2 4. Carbon dioxide dissolved in oceans and form sedimentary rocks
Card 3
Front
What are pollutants?
Back
Card 4
Front
Two natural process to remove carbon dioxide from the atmosphere?
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