Hydrology

2. The movement of water from the surface to greater depths carrying oxygen down allowing animals to thrive.
5. Areas of land that water drains into when the ground is saturated or impermeable.
6. A system that uses underwater sound waves to measure distance and locate objects.
7. The vertical movement of deep water up to the surface bringing up nutrients from the deep ocean allowing animals to thrive.
12. The ratio of the mass of a substance to the volume of the substance. (mass/volume)
14. Water Act: Passed in the U.S. in 1972, this law focused regulation on industrial waste and water contamination as well as waste water treatment.
15. A form of nutrient pollution.
17. basin: The entire geographical area drained by a river and its tributaries.
19. vent: An opening in the sea floor from which heated water rises and mixes with the ocean water above.
20. An underground layer of permeable rock that contains water.
23. An increase in nutrients in a lake or pond, occurring naturally or as a result of pollution, which causes increased growth of algae.
24. pollution: Pollution that enters water from a specific source that can be identified.

1. pollution: Pollution with a widely spread source that can’t be tied to a specific point of origin.
3. Allows substances to easily pass through.
4. The process of removing salt from ocean water.
8. The yearly rising and sinking of cold and warm layers in a lake.
9. The amount of salt in a substance.
10. table: The highest part in the ground that is saturated, or completely filled with water.
11. well: A well in which water flows upward to the surface naturally because it is under pressure.
13. Does not allow substances to pass through.
16. A measure of the clarity of water that depends on the amount, size and composition of suspended matter.
18. A ridge, or continuous line of high land, from which water flows in different directions.
21. A shoreline area where fresh water from a river mixes with salt water from the ocean.
22. shelf: The flat or gently sloping land that lies submerged around the edges of a continent and extends from the shoreline out to the continental slope.