Earth the Water Planet - A Global Overview
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Earth – The Water Planet Image: NASA jschmied©2008
description
This presentation is an introduction to Earth's water resources. Geared for secondary students, the presentation covers percentages and sources of water on our planet. Also covers some human impacts and population issues
Transcript of Earth the Water Planet - A Global Overview
Earth – The Water Planet
Image: NASA
jschmied©2008
The Goldilocks Phenomena…. Not too…
Scientifically this is a bad diagram… Why??
Our planet without water
The our planet is constantly changing
Water covers about 75% of Earth’s surface.
This makes Earth unique!
http://veimages.gsfc.nasa.gov/7100/world.topo.bathy.200401.3x5400x2700.jpg
jschmied©2015
Humans Thrive = 17%Grow crops = 4%
Every landmass on our planet contains water. The physical properties of water make life possible.
Image:http://www.tkg.tv/images/Another%20Blue%20Sky%20in%20Niagara%20Falls.jpg jschmied©2015
InsulationModeration
Transportation
About 97.5% of Earth’s water is in the oceans & is salt water.
Water-2-4Images: Corbis
Where’s the other 2.5%the drinkable water?
68.6% of the remaining
2.5% isfresh water…
Water-2-5Images: Martin Miller, Bruce Molnia
…. stored in Glaciers.(melting)
jschmied©2015
http://blog.mlive.com/muskegon_chronicle_extra/large_groundwater%20art%20.jpg
30.1% of the fresh water is groundwater… in underground aquifers
jschmied©2015
.…Rivers Streams
Marshes etc.
0.13% of allFresh Water
is in Lakes..…
jschmied©2015
… and 0.002 percent of Earth's fresh water is in the atmosphere.
Image: Digital Stock jschmied©2015
http://ga.water.usgs.gov/edu/earthwherewater.html
How much water is available for humans and other animals?
http://ga.water.usgs.gov/edu/earthwherewater.html
Aral Sea
Linked: Health, Wealth, Clean Water, &
jschmied©2015
1900 = 1.6 B
1970 = 3.9 B
2015 = 7.2 B
2050 = >9.2 B
More People…
The Same Amount of Resources…
Earth is a limited resource.
Image: nasa
