Water Map

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Water Map 作者: Mind Map: Water Map

1. How much water is there?

1.1. Earth's freshwater source is about 3% freshwater

1.2. Surprisingly only 1% is usable water

1.3. 2% is Frozen in ice

2. Water Cycle

2.1. The water cycle is the conservation of water in the atmosphere

2.1.1. Evaporation is when liquid water is turned into a gas

2.1.2. Condensation is when water in a gas form transfers to liquid form

2.1.3. Precipitation is when liquid water in the atmosphere cools enough to be released from the atmosphere in a liquid form

3. Water Planet

3.1. After the big bang earth still had no atmosphere

3.2. meteoroids full of oxygen atoms crashed through hydrogen atoms and brought them to earth

3.3. after the atmosphere was created oxygen and hydrogen atoms were trapped and created water

4. How water is used

4.1. In America 49% of water goes to thermo-electricity, 31% goes to agricultural use, 11% goes to town sewers, 4% goes to industry, and 1% goes to domestic use