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Freshwater

Freshwater. Freshwater. 3% of the water on our planet is freshwater Most of the freshwater is frozen (polar ice caps and glaciers) Less than 1% of that water is available for human use. How can Global Warming impact the distribution of water? .

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Freshwater

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  1. Freshwater

  2. Freshwater • 3% of the water on our planet is freshwater • Most of the freshwater is frozen (polar ice caps and glaciers) • Less than 1% of that water is available for human use

  3. How can Global Warming impact the distribution of water?

  4. The freshwater that we use is the same water that has been around for billions of years. • Water never disappears, it simply changes forms in a continual cycle. • This is called the hydrologic cycle or water cycle.

  5. Explain how today we are drinking the same water that Dinosaurs drank millions of years ago?

  6. The Water Cycle

  7. Hydrologic Cycle (Water Cycle)

  8. Evaporation • Water is heated by the sun’s energy and it evaporates. Changing from liquid water to water vapor. TRANSPIRATION: The evaporation of water from plants.

  9. Condensation • Water vapor (gas) cools and condenses (comes together as water droplets) • Result is clouds • Water changes from a gas back into a liquid

  10. Precipitation • Condensed water becomes too heavy and falls back to Earth • Rain, sleet, snow, hail

  11. Accumulation Accumulation is all the water on Earth—above ground and below ground Ex: Oceans, Lakes, Ponds, Rivers, Streams, Water in organisms.

  12. Collection of water on the surface (not moving) Ex. Puddles, lakes • Surface Water

  13. The movement of surface water. Water that moves in a channel, or on land. Ex. When it rains and the water runs off the roof and down your driveway and into the storm drains. • Runoff Runoff video clip Ballona Channel

  14. Groundwater • Collection of water underground. Water seeps into the ground and flows below the surface in underground channels called Aquifers Groundwater Aquifer

  15. What is the difference between runoff, groundwater and surface water?

  16. Watersheds • Watershed- area of land where all of the water within the area leaves out of ONE place Malibu Ballona

  17. Elvation Y Direction X-Direction How do we define watersheds? • Contour maps • Find the peaks! Analogy—Tightly closed hands Inside Watershed Outside Watershed All the water that enters your hands have to leave through one outlet.

  18. As we look at the map of our watershed answering the following questions. • What watershed do we live in? • Where does all our runoff drain too. • Ultimately where does all our litter end up? • La Ballona Watershed • La Ballona Creek then to Santa Monica Bay • Santa Monica Bay 

  19. How does water from aquifers, aqueducts, lakes, streams and rivers get to your house?

  20. Water Treatment Facility • The water is transported to golden state water treatment facility where it is cleaned and sent to your house through underground pipes.

  21. Average Monthly Residential Water Usage in Culver City • The average monthly residential water usage in this area is approximately 8,228 gallons. • The Culver City System is imported water from the Colorado River Aqueduct and the State Water Project

  22. We then use water in our homes! • Drink • Cook • Brush teeth • Shower/bathe • Wash clothes • Wash dishes • Clean • Toilets • Pets and plants • Water lawn

  23. Then where does it go?

  24. Waste Water Treatment Facility • Where it is cleaned and dumped into the Pacific Ocean.

  25. Culver City

  26. Reclaimed Water • Water that has been cleaned by the waste water treatment plant and then re-used. • Many golf courses, stadiums and parks use it to water the lawn.

  27. Potable is fit to drink Examples: Cleaned water Lakes, streams, rivers Groundwater Non-potable is water that is not fit to drink. Examples: Reclaimed water (Sometimes used in golf courses.) Ocean water Polluted water Potable vs. Non-potable

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