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PHS4
Chapter 4 Earth's Resources
Question | Answer |
---|---|
renewable resources | a resource that is virtually inexhaustible or that can be replenished over relatively short time spans |
nonrenewable resources | a resource that takes millions of years to form |
fossil fuel | General term for any hydrocarbon that may be used as a fuel, including coal, oil, and natural gas |
ore | a material from which a useful mineral or minerals can be mined at a profit |
hydroelectric power | the power generated by falling water - the water makes turbines spin and produces power |
geothermal energy | Energy that can be extracted from Earth's internal heat, for example, natural steam used for power generation. |
point source pollution | water pollution that comes from a known and specific location |
nonpoint source pollution | water pollution that does not have a specific point of origin |
runoff | water that flows over the land surface rather than seeping into the ground |
global warming | The increase in average temperatures of Earth and the atmosphere due in part to increased carbon dioxide levels |
conservation | The careful use of resources |
compost | Partly decomposed organic material that is used as fertilizer. |
recycling | The collecting and processing of used items so they can be made into new products. |