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.
Snow is water that has frozen into a crystal in the air and falls to the ground without ever thawing. Sleet is rain that freezes on its way down into an ice ball. It could possibly thaw and refreeze if it hits a warm pocket, but it reaches the ground already frozen. Thatâs why you can see sleet bounce when it lands.