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Changing Earth Ch. 5
Vocabulary from Chapter 5: Natural Resources
| Question | Answer |
|---|---|
| natural resource | any energy source, organism, or substance found in nature that people use. |
| renewable resource | a natural resource that can be replaced in nature at about the same rate it is used. |
| nonrenewable resource | a natural resource that exists in a fixed amount or that is used up faster than it can be replaced in nature. |
| fossil fuel | a nonrenewable energy source formed from ancient plants and animals buried in Earth's crust for millions of years. |
| conservation | protecting, restoring and managing natural resources so that they last as long as possible. |
| recycling | recovering materials that people usually throw away. |
| nuclear fission | a process in which the nucleus of a radioactive atom is split, forming lighter elements and releasing a huge amount of energy. |
| hydroelectric energy | electricity produced by moving water. |
| solar cell | a specially constructed sandwich of silicon and other materials that converts light energy to electricity. |
| biomass | organic matter, such as plant and animal waste, that can be used as fuel. |
| hydrogen fuel cell | a device that produces electricity by separating hydrogen protons and electrons. |
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misskazantzis
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