Energy Resources Vocabulary

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fuel made from living things

• solar energy
• nuclear fission
• hydroelectric power
• biomass fuel

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the percentage of input work that is converted to output work

• inexhaustible resource
• efficiency
• fuel
• natural resource

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the practice of reducing energy use

• nonrenewable resource
• fossil fuel
• petroleum
• energy conservation

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coal, oil, or natural gas that forms over millions of years from the remains of ancient organisms; burned to release energy

• hydroelectric power
• fossil fuel
• geothermal energy
• biomass fuel

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a substance that provides energy as the result of a chemical change

• hydrocarbon
• nuclear fission
• fuel
• solar energy

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the intense heat energy that comes from Earth's interior

• efficiency
• nonrenewable resource
• geothermal energy
• solar energy

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an organic compound that contains only carbon and hydrogen atoms

• petroleum
• hydrocarbon
• fossil fuel
• biomass fuel

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electricity produced by the kinetic energy of water moving over a waterfall or dam

• hydroelectric power
• nuclear fission
• solar energy
• geothermal energy

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energy source that is incapable of being used up

• inexhaustible resource
• nonrenewable resource
• natural resource
• renewable resource

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any material that occurs naturally in the environment and is used by people

• inexhaustible resource
• nonrenewable resource
• natural resource
• renewable resource