Across
- 2. Plants that slow runoff and let more water soak into the ground.
- 7. Substances that do not mix well with water.
- 11. Water that flows over land into rivers and streams.
- 12. An underground layer of rock or gravel that holds water.
- 14. The process when water vapor turns back into liquid.
- 15. When we pump out more groundwater than nature can replace.
- 16. The continuous movement of water on, above, and below Earth’s surface.
- 17. Areas where water covers the ground part or all of the year.
- 18. Water stored underground in soil and rock.
- 20. When water falls from clouds as rain, snow, or hail.
Down
- 1. The top of the underground water level.
- 3. Water found on Earth’s surface like rivers or lakes.
- 4. Makes up about 97% of Earth’s water and is found in oceans.
- 5. When water changes from a liquid to a gas.
- 6. Water sticking to other materials.
- 8. Water sticking to other water molecules.
- 9. Term for two hydrogen atoms and one oxygen atom.
- 10. The tight “skin” on the surface of water.
- 13. Water expands by about 9% when this happens.
- 19. A lake made by building a dam on a river.