Physical Science Chapter 9
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18 terms
Terms | Definitions |
|---|---|
 natural resource | any natural substance, organism, or energy form that living things use |
| renewable resource | a natural resource that can be used and replaced over a relatively short time |
| nonrenewable resource | a natural resource that cannot be replaced or that can be replaced only over thousands or millions of years |
| recycling | the process of making new products from reprocessed used products |
| energy resource | a natural resource that humans use to produce energy |
| fossil fuel | nonrenewable energy resource, such as oil and coal, formed over millions of years from the remains of dead plants and other organisms |
| petroleum | an oily mixture of flammable organic compounds from which liquid fossil fuels and other products are seperated |
| natural gas | a gaseous fossil fuel |
| coal | a fossil fuel that forms underground from partially decomposed plant material |
| strip mining | proccess in which rock and soil are stripped from earths surface to expose the underlying materials to be mined |
| acid precipitation | precipitation that contains acids due to air pollution |
| smog | a photochemical fog produced by the action of sunlight on air pollutants |
| nuclear energy | the form of energy associated changes in the nucleus of an atom |
| solar energy | energy from the sun |
| hydroelectric energy | electricity produced by falling water |
| biomass | organic matter, such as plants, wood, and waste, that contains types of plant and animal communities |
| gasohol | a mixture of gasoline and alcohol that is burned as a fuel |
| geothermal energy | energy from within the Earth |
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