Water on Earth. Objectives Describe how water is distributed on Earth Describe what powers the water...
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Transcript of Water on Earth. Objectives Describe how water is distributed on Earth Describe what powers the water...
![Page 1: Water on Earth. Objectives Describe how water is distributed on Earth Describe what powers the water cycle and how water moves through the cycle.](https://reader035.fdocuments.in/reader035/viewer/2022062219/5517b8ac550346892b8b472d/html5/thumbnails/1.jpg)
Earth’s FreshwaterWater on Earth
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ObjectivesDescribe how water is distributed on Earth
Describe what powers the water cycle and how water moves through the cycle
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Distribution of Earth’s WaterMost of Earth’s
water is salt water97% is ocean water
(salt water) 3% is freshwater
(water with not salt) The majority of
Earth’s freshwater is stored in ice caps and glaciers
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Distribution of Earth’s WaterEarth’s water is stored in reservoirs such as
ocean, glacier, pond, or even the atmosphere.
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The Hydrologic CycleWater is the only molecule on Earth and any
other planet that is present in all three states of matter.Solid (Ice and snow)Liquid (water)Gas (water vapor)
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The Hydrologic CycleEarth’s water is present in all three states, it
can get into a variety of environments around the planet.
The movement of water around Earth’s surface is the hydrologic (water) cycleThe water cycle has no beginning or end it is a
continuous cycle.
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The Hydrologic CycleThe water cycle can be broken down into
three stepsEvaporation: Water turns from a liquid to a gasCondensation: Water vapor condenses into
water dropletsPrecipitation: Water droplets grow bigger from
colliding and falls from the clouds Snow, rain, hail, or sleet
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The Hydrologic Cycle
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People and WaterPeople also depend on water as a natural
resource. Not content to get water directly from
streams or ponds, humans create canals, aqueducts, dams, and wells to collect water and direct it to where they want it
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Water UseWater Use
Use United States World (Global)
Agriculture 34 70
Domestic 12 10
Industry 5 20
Power Plant Cooling
49 >1