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Clouds are water. Either small liquid water drops or tiny pieces of ice. Meteorologists rank clouds according to their height and whether or not they are flat or puffy.

You have only to look up into the sky to try your luck at weather forecasting. Clouds give us a clue about what is going on in our atmosphere and how the weather might change in the hours or even days to come. Each type of cloud forms in a different way,

Clouds comprise a wonderful focus for classroom study. They're ubiquitous, ever-changing, scientifically interesting and, most importantly for teachers, ... they're cheap.

Clouds From Space

nasa clouds for kids

Iridescent Clouds