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Definition
| concentration of trace substances, such as carbon monoxide, sulfur dioxide, nitrogen oxides, hydrocarbons, and sold particulates, at a greater level that occurs in average air |
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Definition
| a gas used as a solvent, a propellant in aerosols, a refrigerant, and in plastic foams and fire extinguishers |
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Definition
| the sustainable use and management of a natural resource, through consuming at a less rapid rate than it can be replaced |
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Definition
| metals, including iron ore, that are utilized in the production of iron and steel |
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Definition
| conversion of sulfur oxides and nitrogen oxides to acids that return to Earth as rain, snow, or fog |
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Definition
| the splitting of an atomic nucleus to release energy |
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Definition
| creation of energy by joining the nuclei of two hydrogen atoms to form helium |
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Term
| biochemical oxygen demand (BOD) |
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Definition
| amount of oxygen required by aquatic bacteria to decompose a given load of organic waster; a measure of water pollution |
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Definition
| the number of species within a specific habitat |
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Definition
| a nuclear power plant that creates its own fuel from plutonium |
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Definition
| energy from steam or hot water produced from hot or molten underground rocks |
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Definition
| power generated from moving water |
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Definition
| metals utilized to make products other than iron and steel |
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Definition
| amount of energy remaining in deposits that have been discovered |
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Definition
| energy sources that form so slowly that for practical purposes it cannot be renewed |
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Term
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Definition
| energy sources that are replaced continually, or within a human lifespan |
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Definition
| residue of plants and animals that were buried millions of years ago (petroleum, natural gas, and coal) |
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Definition
| wood, plant material, or animal waste that is burned for power or converted to charcoal, alcohol, or methane gas |
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Definition
| an atmospheric condition formed through a combination of weather conditions, and pollution, especially from motor vehicle emissions |
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Term
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Definition
| solar energy cells, usually made from silicon, that collect solar rays to generate electricity |
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Definition
| addition of more waste than a resource can generate |
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Definition
| maintenance of a resource in its present condition with as little human impact as possible |
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Definition
| power generated from machines |
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Term
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Definition
| power supplied by themselves (humans) or animals |
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Term
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Definition
| substance in the environment that is useful to people, is economically and technologically feasible to access, and is socially acceptable to use |
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Definition
| particles from a nuclear reaction that emit radiation; contact with such particles may be harmful or lethal to people and must therefore be safely stores for thousands of years |
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Term
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Definition
| the separation, collection, processing, marketing, and reuse of unwanted materials |
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Definition
| a place to deposit solid waste, where a layer of earth is bulldozed over garbage each day to reduce emissions of gasses and odors from the decaying trash, to minimize fires, and to discourage vermin |
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Definition
| the levels of development that can be maintained in a country without depleting resources to the extent that future generations will be unable to achieve a comparable level of development |
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Definition
| anticipated increase in Earth's temperature, caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface |
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Term
| passive solar energy systems |
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Definition
| solar energy system that collects energy without the use of mechanical devices |
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Term
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Definition
| energy in undiscovered deposits that are thought to exist |
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Term
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Definition
| sulfur oxides and nitrogen oxides emitted by burning fossil fuels, enter the atmosphere-where they combine with oxygen and water to form sulfuric acid and nitric acid-and return to earth's surface |
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Term
| active solar energy systems |
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Definition
| solar energy system that collects energy through the use of mechanical devices like photovoltaic cells or flat-plate collectors |
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