We just learned about the Anemometer that measures wind speed.
We know that clouds are tiny little drops of water and water vapor floating around in the sky.
When those tiny little drops of water get bigger and bigger from more air vapor and from bumping into each other, after a while they get so heavy they can't stay up in the sky anymore and they fall out of the clouds.
This is rain!
(from: wikipedia - rain)
Kid Facts - Blast from the past: Petoskey Stone
