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2. Where's the Water |
| Earth is a planet rich with water, a compound essential to all living things. However, fresh water, vital to humans and many other living things, is a limited resource. So, where is all the water? |
| 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. |
| 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. |
| 4:08 minutes |
Science: 3rd – 13; 6th - 3
Environmental Studies: 9-12th – 5,6,7
Geography: 7th – 11,12 |
1. Acid Rain
2. Where's the Water
3. Water Pollution
4. Bottled - vs- Tap-Which Tastes Better?
5. Water Supply and Demand
6. Water Pollution and the Aquatic Food Chain
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| Download
Teacher Guide (PDF 2.2 MB) |
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