Water Systems

2. The environment surrounding the planet
3. The movement of deep water to the surface when surface water is pushed aside
5. The rocky solid ground of the Earth's crust
12. A scientist who studies all aspects of the ocean
13. Large chunks that have broken of a glacier
15. Water that flows over the land and eventually ends up in a lake, ocean or ground
16. An area on Earth where salinity levels are higher than average due to freezing of ocean water
17. Includes evaporation, condensation, precipitation and run-off
19. The change of state from a gas to a liquid due to a decrease in temperature
21. A person who studies Earth's water systems
22. Ocean water near the continents has a lower ? level due to run-off

1. Cause an increase in algae which then causes a decrease in oxygen levels in the water
4. Increase in the average temperature of the Earth's oceans and air
6. The change of state from liquid to a gas
7. Includes all of the water in,on and around the earth
8. A moving mass of ice and snow
9. The ? of salt water is -1.9 degrees Celcius
10. Salt water is more ? than fresh water
11. A word that describes rain, snow, hail, or sleet
12. High levels usually result in healthy aquatic environments
14. An area on Earth where salinity levels are higher than average due to increased evaporation
18. A well is an example of this
20. The cloudiness of the water