Chapter 7 Terms

2. a deposit that contains a valuable mineral that has been concentrated by mechanical action.
3. the process by which the nucleus of a heavy atom splits into two or more fragments; the process releases neutrons and energy.
7. the energy produced by heat within Earth.
10. the energy received by Earth from the sun in the form of radiation.
11. the preservation and wise use of natural resources.
12. a mineral, rock, or organic material that can be used as jewelry or an ornament when it is cut and polished.
13. a natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably.
14. electrical energy produced by the flow of water.

1. a natural resource that can be replaced at the same rate at which the resource is consumed.
3. a resource that forms at a rate that is much slower than the rate at which it is consumed.
4. the process by which nuclei of small atoms combine to form new, more massive nuclei.
5. plant material, manure, or any other organic matter that is used as an energy source.
6. a mineral deposit within a rock formation.
8. a nonrenewable energy resource that formed from the remains of organisms that lived long ago.
9. the process of recovering valuable or useful materials from waste or scrap.