Ch 3 Natural Resources

3. small plantlike organisms that make up the first link in the ocean's food chain
5. plowing, a method used by farmers to help keep water from washing soil away
7. a solid substance found naturally in the earth's surface
8. cover, a low growing crop such as clover
13. chemicals produces from oil
15. a resting period of time to allow natural processes replace the nutrients that were used up
16. energy, produced as water flows from the reservoirs and turns turbines
22. shelf, floating ice
25. energy, sun's energy used to power and heat things
27. formed from plant material that was quickly buried and fossilized under great pressure
28. resources, can not be replaced easily
29. concentrated areas of specific minerals often found near volcanic areas
30. water vapor in the air
33. used to separate metal in the ore from the other materials
34. layers of sand gravel or bedrock that hold and move ground water

1. gas, a fossil fuel found in a gaseous state and found close to deposits of oil
2. resources, materials on Earth that are available for our use
4. liquid form of fossil fuels
6. most nuclear energy depends on this mineral
9. materials with usable amounts of metal in them
10. sheet, huge expanse of ice
11. water, rainwater flows into the soil and is stored beneath the surface of the earth
12. used to describe metal that is soft and shapeable
14. resources, can be replaced by natural means in a short amount of time
17. energy, uses heat from the earth to produce steam
18. fuels, formed when the remains of plants and animals are buried quickly
19. all of Earth's water found in lakes oceans streams rivers soil underground and in the air
20. holding areas used to help engineers control the flow of water
21. a factory that separates crude oil into different products
23. ice shelves break off into the ocean and float independently
24. cycle, water replaced and reused by looking at the path it takes as it travels from land to sky and back to land
26. energy, windmills use this to generate electrical energy
31. ice, forms when ocean water freezes
32. oil, wells are built to retrieve this petroleum