Definition of reservoir. 1 : a place where something is kept in store: such asa : an artificial lake where water is collected and kept in quantity for useb : a part of an apparatus in which a liquid is heldc : supply, store a large reservoir of educated people.
Four types of winter precipitation. While all forms of precipitation start as snow high up in the clouds, there are four primary types that eventually reach the ground: snow, sleet, freezing rain and plain ol' rain. Snow occurs when the atmosphere is cold all the way from the clouds to down here at the surface.
Sleet is ice in small pellet form, very near the melting point and often mixed or coated with liquid water, Snow forms in a cold â¦ air (below freezing) and falls to ground in cold air. Sleet may be snow that has fallen through a warm layer of air, melted, then through a colder layer where it freezes again. It can also be rain that falls from a warm layer of air (above freezing) and passes through cold air (below freezing) on the way down, freezing into small ice pellets.