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19 Cards in this Set
- Front
- Back
Fossil fuels
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fuels formed in the ground over millions of years from the remains of dead plants and animals; examples include petroleum, propane, natural gas, and coal.
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Nonrenewable
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sources of energy with a limited supply that can not be replenished (made again) in a short period of time
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Renewable
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energy that comes from sources that are constantly replenished (made again) by natural processes in a short amount of time.
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Inexhaustible
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energy that cannot be entirely consumed or used up; unlimited
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Coal
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a fossil fuel formed from prehistoric plant remains, made mostly of carbon and burned as a fuel; appears as a brown to black colored soft rock.
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Petroleum
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a naturally occurring, nonrenewable fossil fuel formed from the remains of freshwater organisms and made of hydrocarbons, can be solid, liquid or gas, yellowish-green to black in color; also called crude oil.
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Natural gas
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a colorless, combustible fossil fuel formed from the remains of marine organisms and mostly made of methane gas.
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Propane
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a colorless, combustible fossil fuel found in natural gas and petroleum; found in gaseous state.
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Biomass
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A renewable energy source that uses plant materials and animal waste as fuel.
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Compost
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A mixture of rotting vegetation and manure; used as a fertilizer.
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Hydropower
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a renewable energy source that converts falling or flowing water to electricity; employs the use of a dam which controls the flow of a river.
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Tidal energy
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a renewable, inexhaustible energy source that converts the energy of tides into electricity; employs the use of barrages and turbines as the tide rises and falls twice a day.
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Nuclear energy
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a nonrenewable energy resource that comes from energy stored in the nucleus of atoms, usually Uranium atoms, and is released in nuclear reactors to make electricity.
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Fission
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the splitting of a nucleus into at least two other nuclei that releases a relatively large amount of energy; the process that occurs in nuclear reactors.
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Fusion
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a nuclear reaction in which two or more nuclei combine together to form one larger nucleus; when this occurs, energy is released.
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Geothermal energy
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a renewable energy resource that converts the heat naturally produced deep within the earth into electricity.
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Solar energy
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a renewable, inexhaustible energy resource that converts energy given off by the sun into electricity; employs the use of photo-voltaic (PV) cells to collect energy.
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Wind energy
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a renewable, inexhaustible energy resource that converts energy of moving air caused by temperature and pressure differences to electricity; employs the use of wind turbines to collect energy.
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Greenhouse effect
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the naturally occurring process in which gases in the atmosphere trap heat from the sun and keep the earth warm.
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