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Cloud
 
A cloud, flat on the bottom, with a very tall, large top that is shaped like a mountain

This picture shows a cumulonimbus cloud. Understanding clouds is important to NASA because clouds help predict how Earth's climate will change in the future. Image Credit: NASA

      a mass of tiny water drops or ice crystals that floats in the air above the Earth



Sentences:
The CERES S'COOL project asks students to help NASA study the different types of clouds.

The clouds blocked the sunlight.



More Information:
http://asd-www.larc.nasa.gov/SCOOL/   →