Earth Space Science

5. Alternate energy sources produced from the fission, or splitting
6. electricity generated from running water flowing over dams
7. Energy obtained from hot magma or dry, hot rocks inside Earth
10. Trees are cut down for lumber, fuel and paper.
14. gaseous hydrocarbon that often forms with oil, but forms above it since gas is a lighter molecule
15. deposits of useful minerals; metals from ore, deposits in which minerals exist in quantities large enough to extract, which used energy
17. Highways, parking lots, building infrastructures.
18. To feed people, farmers grow crops.
19. uses large number of windmills to generate electricity
20. flowing water used to generate electricity

1. come from natural processes that have been happening for thousands of years and will continue to occur
2. differences between high and low tides can be used to turn turbines to create electricity
3. Something from Earth that living things use to meet their needs.
4. Any material not used as fuels or as sources of metals
8. energy produced by burning organic matter, such as wood, food scraps and alcohol.
9. Oil, natural gas, and coal formed from the remains of plants and animals that were buried and chemically changed thousands of years ago.
11. most abundant fossil fuel, a rock that contains at least 50% plant remains
12. thick, black liquid hydrocarbon (sometimes called petroleum)
13. energy from the sun
16. Areas where garbage is deposited and covered with soil.