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11 Cards in this Set
- Front
- Back
Fossil fuels currently supply about ____ percent of all world commercial energy supplies.
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86%
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Sweden, Denmark, & Switzerland have higher standards of living by most measures than Americans or Canadians...
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...even though their energy use is much less than ours
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Which of the following statements is true?
1. World coal reserves are smaller than petroleum reserves 2. The fossil fuel most abundant in the United States & Canada is petroleum 3. Confirmed oil supplies in the U.S. can only last ten years at current rates of consumption 4. Usually you get a higher dose of radiation living next to a nuclear plant than a coal-burning plant |
3. Confirmed oil supplies in the U.S. can only last ten years at current rates of consumption
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Renewable energy includes wind, solar, hydropower & nuclear.
True or False? |
True
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Fossil Fuels
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Organic (carbon-based) compounds derived from decomposed plants, algae, and other organisms buried in rock layers for hundreds of millions of years
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Three primary fossil fuels
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Crude oil
Coal Natural gas |
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How efficient is coal?
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Coal is one of the most efficient sources of fossil fuel, but only about 30% is useful. The rest is released as heat and pollution.
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What are pollution credits?
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An industry is allowed to pollute a certain amount based on past performance.
If they produce less than the stated amount of pollution, they get a credit that can be sold to another company. |
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How much energy is wasted?
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84% of all commercial energy in the US is wasted.
People in the US waste as much energy as 2/3 of the world’s population consumes. |
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What is energy efficiency?
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Percentage of total energy input that does useful work in an energy conservation system
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What are life-cycle costs?
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The initial cost plus the life-time operating costs of an item or appliance.
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