Know : 10 Quick Facts Water

1. When ground water is contaminated it may remain that way for several thousand years.

2. Human blood is 83% water.  Human bones are 25% water.

3. Salt water is 97% of water on earth.  Three percent is fresh water.   Most of the freshwater stored on the earth is frozen in glaciers.

4. Each day the sun evaporates 1,000,000,000,000 (one trillion) tons of water.

5. The earth’s surface is about 80% water.  That is about 320,000,000,000,000 (363 trillion) gallons of water.

6. In some deserts, rain is so uncommon that the natives to not have a word for it.

7. Heating water is the second largest energy user in the home.

8. In some countries the law requires solar heating of water for domestic uses.

9. In one glass of water, there are about 8,000,000,000,000,000,000,000,000 (8 septillion water molecules.)

10. In a one hundred year period, a water molecule spends 98 years in the ocean, 20 months as ice, about 2 weeks in lakes and rivers, and less than a week in the atmosphere.

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Courtesy : www.waterbank.com