The inner regions of Antarctica gets only about 2 inches of precipitation per year. Nuclear Regulatory Commission Evaporation is the process by which water changes from a liquid to a gas or vapor. The molecules rise through the atmosphere as water vapor.
The molecules then escape from the liquid into the surrounding medium as free gas molecules. If you ever find yourself stranded on an island in need of salt, just get a bowl, add some seawater, and wait for the sun to evaporate the water, leaving the salt.
Evaporation drives the water cycle Credit: Related " ". The sun is what makes the water cycle work. This often happens in the Rocky Mountains as dry and warm Chinook winds blow in from the Pacific in late winter and early spring. But the sun's immense source of power also has some drawbacks.
It would also be solid, since without the sun to warm it, the Earth would be entirely frozen. Most of the water that evaporates from the oceans falls back into the oceans as precipitation. If water molecules break apart on the sun into hydrogen and oxygen atoms called fission , they would no longer have any of the properties of water. As a result, the hydrogen atoms in a water molecule attract the oxygen atoms in different watermolecules.
A water molecule, or H2O, consists of two hydrogen atoms and one oxygen atom. Wind speed: When they get big and heavy enough, they fall as precipitation. As this map shows, evaporative coolers work best in the dry areas of the United States red areas marked A and can work somewhat in the blue areas marked B.
Go back to the water cycle diagram. The molecules of water slow down and stick together, or condense, as they cool. Friday, 02-Dec-2016 12: Evaporation is more prevalent over the oceans than precipitation, while over the land, precipitation routinely exceeds evaporation. Heat energy is necessary for evaporation to occur.
Nature's Beautiful Speed Bumps. California Energy Commission. NASA has a great description of the layers of the atmosphere with links to images of each. Without it, we wouldn't have oxygen or liquid water on our planet. The more the sun excites the molecules, the faster they move, or evaporate.
When the water molecules are moving fast enough to overcome and break these bonds, water becomes a gas. The sun also drives the water cycle , which moves about 18,757 cubic miles 495,000 cubic kilometers of water vapor through the atmosphere every year [ ref ].