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  1. 4. A ridge of land that separates watersheds
  2. 6. The area of permeable rock or soil that is totally filled with water
  3. 10. Amount of one substance in a certain volume of another substance
  4. 12. Amount of heat needed to increase the temperature of a certain mass of a substance by one degree Celsius
  5. 13. The process by which plants use water, along with carbon dioxide and energy from the sun to make their own food
  6. 16. The process of which particles stick some sticky globs and sinks into the settling basins
  7. 19. Streams and smaller rivers that feed into a main river
  8. 20. The addition of any substance that has a negative effect on water or the living things that depend on the water
  9. 22. Process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous state
  10. 24. A substance that does the solute dissolves into
  11. 26. Water that falls to earth as rain, snow, hail, or sleet
  12. 27. A widely spread source of pollution that cant be tied to a specific point of origin
  13. 28. A lake that stores water for human use
  14. 29. Process of supplying water to areas of land to make them suitable for growing crops
  15. 32. Electricity that is produced by the kinetic energy of water moving over a waterfall or through a dam
  16. 36. A well that uses pressure to draw water
  17. 37. Top of the saturated zone
  18. 38. The layer of rock and soil above the water table
  19. 39. Form of energy that an object has when it is moving
  20. 41. A measurement of the substances in water besides water molecules
  21. 42. The combined level of Calcium and Magnesium in a sample of water
  22. 43. Water that fills the cracks and spaces in underground soil and rock layers
  23. 45. One possible method of obtaining fresh water from salt water
  24. 46. Land area that is covered by shallow layer of water during some or all of the year
  25. 48. Specific source of pollution that can be identified
  1. 1. A form of precipitation that is more acidic than normal
  2. 2. tightness across the surface of water that is caused by the polar molecules pulling on one another
  3. 3. Chemicals intended to kill insects and other organisms that damage crops
  4. 5. Material that prevents water from passing through
  5. 7. Substances such as nitrogen and phosphorus that enable plants and algae to grow
  6. 8. The process of which water is given off through the leaves as water vapor
  7. 9. Place where an organism lives and obtains all things it needs to survive
  8. 11. The waste water and the different kinds of wastes in it
  9. 14. The substances that cause many types of pollution that can also include water pollution
  10. 15. Practice of using less of a resource so that it will not be used up
  11. 17. The combined force of attraction among water molecules and the molecules of surrounding materials
  12. 18. Any underground layer of permeable rock or sediment that holds water
  13. 21. Heavier sediments that build up into long ridges
  14. 23. Energy that is stored and waiting to be used.
  15. 25. A molecule that has electrically charged areas
  16. 26. Materials that have large and connected pores
  17. 30. Process of passing water through a series of screens that allows water through but not larger solid particles
  18. 31. Sudden violent flood that occurs within a few hours or even minutes following a storm
  19. 33. A measurement of how acidic or basic water is
  20. 34. The process of which nutrients builds up in the lake
  21. 35. The land area that supplies water to a river system
  22. 40. The process by which a gas changes to a liquid
  23. 44. Continuous process by which water moves from earth's surface to the atmosphere and back
  24. 45. A condition where an area experiences a long period of scarce rainfall
  25. 47. A mixture that forms when one substance dissolves another