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7 Cards in this Set
- Front
- Back
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___% of the earth's people consume ___% of the energy
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20, 75
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The US consumes _______ in one year
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the energy it took 1 million years to produce geologically
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Coal supplies 75% of China's energy, versus __% for the US
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22
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4 R's
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1. reduce
2. reuse 3. recycle 4. refuse |
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US energy sources
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a. oil (40%)
b. coal (20%) c. nuclear (20%) d. natural gas (15%) e. hydro electric (5%) |
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Nuclear energy Pros and Cons
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+no greenhouse gases
- disposal of spent fuel a big problem |
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Hydro-electric wind Pros and Cons
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+ renewable
+ non polluting - requires damming of rivers |
