schmied earththewaterplanet
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Introduction to Earth's Water ResourcesTRANSCRIPT
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Earth – A Water PlanetEarth – A Water Planet
Image: NASA
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Water covers about 75% of EartWater covers about 75% of Earthh’’s surface. s surface.
This makes Earth unique!This makes Earth unique!
http://veimages.gsfc.nasa.gov/7100/world.topo.bathy.200401.3x5400x2700.jpg
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Every landmass on our planet contains water. Every landmass on our planet contains water.
The physical properties of water make life possible.The physical properties of water make life possible.
Image:http://www.tkg.tv/images/Another%20Blue%20Sky%20in%20Niagara%20Falls.jpg
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About 97.5% of EarthAbout 97.5% of Earth’’s water is in s water is in the oceans & is salt water.the oceans & is salt water.
Water-2-4Images: Corbis
WhereWhere’’s the other 2.5%?s the other 2.5%?
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68.7% 68.7% of allof all
the 2.5% isthe 2.5% isfresh water…fresh water…
Water-2-5Images: Martin Miller, Bruce Molnia
…….and is.and isstored in stored in Glaciers.Glaciers.
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http://blog.mlive.com/muskegon_chronicle_extra/large_groundwater%20art%20.jpg
30.1% of all fresh water is groundwater30.1% of all fresh water is groundwater in underground aquifers in underground aquifers jschmied©2008jschmied©2008
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..…Rivers ..…Rivers & &
StreamsStreams
0.3% of all0.3% of allFresh WaterFresh Water
is in is in Lakes..…Lakes..…
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Only about 0.001 percent of the total Only about 0.001 percent of the total Earth's water volume is in the Earth's water volume is in the
atmosphere!atmosphere!
Image: Digital Stock
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http://ga.water.usgs.gov/edu/earthwherewater.html
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How much water is available for How much water is available for humans humans and other animalsand other animals??
http://ga.water.usgs.gov/edu/earthwherewater.html
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Linked Issues: Linked Issues: Health, Wealth,Health, Wealth, Water,Water, & &
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& more& more
PeoplePeople!!1900 = 1.6 Billion1900 = 1.6 Billion
1970 = 3.9 Billion1970 = 3.9 Billion
1/2012 = 6.99 Billion 1/2012 = 6.99 Billion
2050 = 9.2 Billion?2050 = 9.2 Billion?
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More People… More People…
The Same Amount of Resources…The Same Amount of Resources…
Earth is ….??Earth is ….??
Image: nasa