Down |
2. | The combined force of attraction between water molecules and molecules of surrounding materials. |
3. | Water that fills the cracks and spaces in underground soil and rock layers. |
4. | Water can pass through easily. |
5. | The process of supplying water to areas of land to make them suitable for growing crops. |
6. | The many small streams that come together at the source of a river. |
12. | The process by which water is given off through leaves of a plant as water vapor. |
13. | Water that falls to Earth as rain, snow, sleet, or hail. |
14. | The combined level of calcium and magnesium in a sample of water. |
16. | A molecule that has electrically charged ends. |
18. | The area of permeable rock or soil that is totally filled with water. |
19. | The tightness across the surface of water that is caused by the polar molecules pulling on one another. |
20. | The addition of any substance that has a negative effect on water or the living things that depend on water. |
21. | Obtaining freshwater from saltwater. |
24. | The top of the saturated zone. |
28. | Groundwater that flows to the surface. |
29. | The streams and smaller rivers that feed into a main river. |
31. | An area of land that is covered with a shallow layer of water during some or all of the year. |
32. | The substances that cause pollution. |
33. | A mixture formed when one substance dissolves another. |
36. | A ridge of land that separates one watershed from another. |