Clouds are made up of condensation. This means that tiny drops of water have gathered together. There are several types of clouds. Scientists determine a type of cloud by its shape, color, and where it forms in the atmosphere. Clouds can help predict weather, because they form along a front.

Stratus or stratocumulus clouds look like large gray blankets. If you see these, you can expect a mist or drizzle.

Stratus cloud picture used with permission from Pics4Learning

Cirrus clouds are little wispy clouds that are high in the sky. When you see these, you can know that you will have fair or pleasant weather that may be a little cooler.

Picture of cirrus clouds used with permission from Pics4Learning

Cumulus clouds look like puffs of cotton. When you see these, you can expect storms to come in later on. Cumulus clouds can turn dark and grow bigger. These are called cumulonimbus clouds.

Picture of cumulus clouds used with permission from Pics4Learning

Cumulonimbus clouds look like huge fluffy balls of cotton on top, but very flat on the bottom. If the flat bottom of these clouds is dark, expect heavy rain and thunderstorms, and maybe even lightning!

Cumulonimbus picture used with permission from Pics4Learning

To learn more about clouds, visit this web site: 
http://vortex.plymouth.edu/clouds.html/

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