Water Cycle Essay

437 Words2 Pages
Haileigh adams 3rd Hour 1/7/11 The Water Cycle (The Hydrologic Cycle) Definition: Water cycle; the process of which the various forms of water move about the planet in a fairly constant balance. The water cycle has no true beginning and no true ending, except the water changes from a liquid to a solid such as water turns into ice crystals then into snow and also hail. Also there could be turned into water vapor. The cycle is the process by which the water, in whatever form, goes from place to place, ocean to cloud to rainwater to river and back through a cycle of rising air currents, precipitation, runoff and a few other processes. Rising air currents take water, as vapor, up into the atmosphere; with the water form of "evapotranspiration," which is water transpired or from plants and that has evaporated from the soil. The cooler temperatures in the atmosphere cause it to condense in the clouds, which float around in the air until they fall from the sky as precipitation. Some precipitation falls as snow and can accumulate as hail, where it can stay, as ice crystals, for thousands of years. In warmer climates, snow melts, then warmer spring and summer months, and that water flows into streams and rivers, which eventually return it to the ocean, or into the groundwater, which eventually reach underground purifiers. Over time, the water continues to flow, some to return to the ocean, where the water cycle renews itself. There are four basic steps to tie all these events together. Evaporation occurs when water turns from liquid to gas, usually as a result of the sun's heat rays. Evaporation often includes transpiration from plants. Though together they are specifically referred to as evapotranspiration. Condensation occurs as the vapor rises into the sky, creating clouds and fog. Once clouds are formed, the movement of water in states through the
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