PRECIPITATION
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Precipitation is water vapour that condenses into a cloud and it falls to the Earth. Before it falls to the Earth cloud droplets must increase in size. This happens when droplets collide and combine with one another.It falls as rain, snow, sleet, or hail.   

Rain is formed by the combination of about 1,000,000 cloud droplets colliding together to form 1 drop.

Snow is formed when the water vapor changes directly into a solid.  Snowflakes are 6 sided ice crystals.