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MSC_PlanetH2OWherestheWater.flv
MSC_PlanetH2OWherestheWater_x264.mp4
This podcast is part of the series: Planet H2O
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Creator: McWane Science Center
School/Organization: McWane Science Center
Overview:
Seventy percent (70%) of the Earth’s surface is covered with water and when viewed from space, our planet appears blue with a plentiful supply of water. However, clean, fresh water for drinking and irrigation is a scarce and valuable commodity in many parts of the world. Even though water is abundant on our planet, only a very small percentage can be used by humans and other organisms.
This activity demonstrates the sources of water on our planet. Reduce Earth’s water supply to 2 liters and then use common household items to represent the distribution of water on our planet. More than half a gallon is found in the oceans, inland seas, and salt lakes – water that is too salty to use. At the end of the activity, you will see that only about 1 teaspoon of our original 2 liters is readily available for human use – water that is found in rivers, lakes, streams, and underground aquifers.
Length: 04:06
Content Areas: Science
Alabama Course of Study Alignments and/or Professional Development Standard Alignments:
[S1] ENV (9-12) 5: Describe properties of water that make it a universal solvent.
[S1] ENV (9-12) 6: Identify sources of local drinking water.
[S1] ENV (9-12) 7: Identify reasons coastal waters serve as an important resource.
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