1. Earth: The Water Planet What percent of the water on Earth is good enough to drink?

2. Water on Earth 97% = Salt Water, Oceans, Seas, some lakes and groundwater 2.4% = Glaciers and Ice Caps ≈ 0.57% = Fresh water that is unavailable, Too far underground or polluted 0.03% = Water To Drink

3. The Hydrologic Cycle AKA: The Water Cycle

4. Aquifer

5. Places Water is stored Reservoirs Aquifer Rivers, Streams Lakes Oceans Glaciers & Ice Caps Plants and Animals

6. Aquifer Water stored in the ground Ground water

7. Glaciers and Ice Caps Glaciers and Ice Caps hold (or held) about 80% of all fresh water on Earth. However they are shrinking fast due to global warming.

8. How Water Moves Precipitation Evaporation Condensation Percolation Transpiration Irrigation Ground water pumping (Wells) Run Off

9. Percolation When water moves downward between spaces in the soil and bedrock.

10. Permeable Something that water can pass though

11. Impermeable Something water can not pass through

12. Transpiration The movement of water by plants as they breath. Water is drawn up from the soil by roots and “exhaled” through leaves as the plant breaths.

13. Irrigation To supply water to crops and such by pumping or diverting it from a river or other body of water

14. Run Off When water travels over the surface of the ground (after a hard rain) Water can collect contaminates like oil and gasoline from roads and animal wastes from yards and farms. (this is an example of non-point pollution)

15. Non-point Pollution Pollutants from a source that is difficult to pinpoint. They include chemicals from lawns and fields, trash, oil, and animal and human wastes. Typically, water running off of streets, parking lots, yards, construction sites and agricultural lands sweep these pollutants into bodies of water when it rains. About 70 percent of pollution in the nation's waters come from nonpoint sources. www.lcra.org/water/glossary.html www.lcra.org/water/glossary.html

16. Point Pollution Pollution that can be traced to a single source or point, such as a sewage treatment plant, outfall, or other discharge pipe.