Water Systems

2. A person who studies Earth's water systems
3. Water that flows over the land and eventually ends up in a lake, ocean or ground
5. Includes all of the water in,on and around the earth
9. An area on Earth where salinity levels are higher than average due to freezing of ocean water
10. Salt water is more ? than fresh water
11. The movement of deep water to the surface when surface water is pushed aside
15. A scientist who studies all aspects of the ocean
18. A word that describes rain, snow, hail, or sleet
19. The change of state from liquid to a gas
22. Ocean water near the continents has a lower ? level due to run-off
23. An area on Earth where salinity levels are higher than average due to increased evaporation

1. The rocky solid ground of the Earth's crust
4. The ? of salt water is -1.9 degrees Celcius
6. Large chunks that have broken of a glacier
7. The change of state from a gas to a liquid due to a decrease in temperature
8. A moving mass of ice and snow
12. Increase in the average temperature of the Earth's oceans and air
13. The cloudiness of the water
14. A well is an example of this
16. Cause an increase in algae which then causes a decrease in oxygen levels in the water
17. Includes evaporation, condensation, precipitation and run-off
20. The environment surrounding the planet
21. High levels usually result in healthy aquatic environments