Chapter 7 Terms

2. a mineral, rock, or organic material that can be used as jewelry or an ornament when it is cut and polished
6. electrical energy produced by the flow of water.
8. the process of recovering valuable or useful materials from waste or scrap.
10. a mineral deposit within a rock formation.
11. the preservation and wise use of natural resources.
13. a natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably.
14. the energy received by Earth from the sun in the form of radiation.
15. plant material, manure, or any other organic matter that is used as an energy source.

1. a natural resource that can be replaced at the same rate at which the resource is consumed.
3. a nonrenewable energy resource that formed from the remains of organisms that lived long ago.
4. a resource that forms at a rate that is much slower than the rate at which it is consumed.
5. a deposit that contains a valuable mineral that has been concentrated by mechanical action.
7. the energy produced by heat within Earth.
9. the process by which nuclei of small atoms combine to form new, more massive nuclei.
12. the process by which the nucleus of a heavy atom splits into two or more fragments; the process releases neutrons and energy.