2. The Water Planet www.123rf.com The global ocean covers 71% of Earth’s surface Landmass covers 29% of Earth’s surface

3. Fresh Water Water that is not salty and has little or no taste, color or smell. www.wilderness.org.au scenery.cultural-china.com

4. Salt Water Water that contains dissolved salts and other minerals. www.painetworks.com

5. Salt Water vs.Fresh Water 3% 97%

6. Less than 1% of fresh water is available to humans What about us?

7. The Water Cycle The continuous movement of water through the environment of Earth.

8. Process of The Water Cycle Evaporation – the process in which water changes from liquid to water vapor.

9. Condensation – the process in which water vapor in the atmosphere becomes liquid.

10. Precipitation – water that falls from clouds.

11. Percolation (infiltration) – the slow passage of liquid from the surface to underground via a filtering system.

12. Runoff - the movement of land water to the oceans, normally in the form of rivers, lakes, and steams.

13. Transpiration – the release of water from the leaves of plants