Fresh Water.

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Presentation transcript:

Fresh Water

The Water Cycle http://observe.arc.nasa.gov/nasa/earth/hydrocycle/hydro3.html

Water Budget a continuous cycle of evaporation, condensation, and precipitation the worlds water budget is in balance because precipitation = evaporation precipitation= income evaporation and runoff= expenses local water budgets (that of a particular area) are NOT balanced due to temperature, presence of vegetation, wind, and amount and duration of rainfall

Water Conservation each person in the U.S. uses ~65,700 gallons of TREATED water each year (180 gal per day) bathing, washing clothes, dishes, brushing teeth, watering lawn, carrying waste away, drinking

Agriculture and industry use the greatest amount of water

90% of this used water is returned to rivers, lakes, oceans, etc.

http://ga.water.usgs.gov/edu/wwvisit.html

two ways to insure that there is water for tomorrow: conserve, conserve, conserve! desalination (removing salt from the ocean water) How to conserve water at home: http://www.epa.gov/epahome/athome.htm Desalination Plant in Key West, FL

How much do you know about water? http://www.epa.gov/safewater/kids/flash/flash_qagame.html

River Questions (Write answers on your paper-to turn in-it’s ok if you don’t know all the answers- Do Your BEST!) What river most affects us here in Wilmington? What are some ways that our town benefits from that river? What are some of the ways humans can impact the health of the river? What can you do to improve the quality of water in the river?