Chapter 7 terms

1. the process by which the nucleus of a heavy atom splits into two or more fragments; the process releases neutrons and energy.
2. a resource that forms at a rate that is much slower than the rate at which it is consumed.
4. a mineral, rock, or organic material that can be used as jewelry or an ornament when it is cut and polished.
5. the preservation and wise use of natural resources.
8. a deposit that contains a valuable mineral that has been concentrated by mechanical action.
10. a mineral deposit within a rock formation.
12. the energy produced by heat within Earth.
13. plant material, manure, or any other organic matter that is used as an energy source.
15. the process of recovering valuable or useful materials from waste or scrap.
16. more massive nuclei.

1. the process by which
3. electrical energy produced by the flow of water.
6. of small atoms combine to form
7. a natural resource that can be replaced at the same rate at which the resource is consumed.
9. the energy received by Earth from the sun in the form of radiation.
11. a natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably.
14. a nonrenewable energy resource that formed from the remains of organisms that lived long ago.