The Cycle
The Cycle
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| Each part of the cycle drives the other parts. |
As the water evaporates, vapors
rise and condense into clouds. The clouds move over the land, and precipitation
falls in the form of rain, ice or snow. The water fills streams and rivers,
and eventually flows back into the oceans where evaporation starts the
process anew. Learn a lot more about this complicated process in concepts.
Water's state (solid, liquid or gas) is determined mostly by temperature. Although water continuously changes states from solid to liquid to gas, the amount of water on Earth remains constant. There is as much water now as there was hundreds of millions of years ago.