Condensation <ul><li>The act or process of reducing a gas or vapor to a liquid or solid form. </li></ul>
Evaporation <ul><li>Process by which radiant energy from the sun turns liquid water into a gas (water vapor). </li></ul>
Transpiration <ul><li>The passage of watery vapor through the skin or through any membrane or pore. </li></ul>
Accumulation <ul><li>The act of gathering and collecting. </li></ul>
Precipitation <ul><li>Falling products of condensation in the atmosphere, as rain, snow, or hail. </li></ul><ul><li>The amount of rain, snow, hail, etc., that has fallen at a given place within a given period, usually expressed in inches or centimeters of water. </li></ul>
Snow <ul><li>A precipitation in the form of ice crystals, mainly of intricately branched, hexagonal form and often agglomerated into snowflakes, formed directly from the freezing of the water vapor in the air. </li></ul>
Rain <ul><li>Water that is condensed from the aqueous vapor in the atmosphere and falls to earth in drops more than 1/50 in. </li></ul>
Hail <ul><li>Showery precipitation in the form of irregular pellets or balls of ice more than 1/5 in. </li></ul>
Surface Runoff <ul><li>Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle. </li></ul>
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