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Cumulus clouds are detached clouds seen on sunny days, stratus clouds are gray, thick and cause drizzle and cirrus clouds are wispy, thin clouds composed of ice crystals. Each type of cloud has unique characteristics reg... More »

www.reference.com Science Earth Science Atmosphere

Stratus clouds are formed when an upward-moving current of air collides with a thinner layer of air above it, causing water drops to form. The name "stratus cloud" derives from the shape of the cloud formation, where the... More »

www.reference.com Science Weather & Tides Clouds

Like all clouds, stratus clouds are made of water vapor, water droplets and even ice crystals. Stratus clouds are identified not by what they are composed of, but by their general appearance, which is uniform, wide-rangi... More »

www.reference.com Science Weather & Tides Clouds
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Cumulus clouds are comprised of water droplets, water vapor, super-cooled water droplets and ice crystals (when the freezing point is in the middle of the cloud), according to Northern Michigan University. Cumulus clouds... More »

www.reference.com Science Earth Science Atmosphere

Different types of clouds vary in distance from Earth's surface, but range from quite near the ground to as high as 50,000 feet. Heights of the three main types of clouds also vary depending on latitude. More »

www.reference.com Science Earth Science Atmosphere

Thunderstorms originate in cumulonimbus clouds. Warm, humid air rises then cools, creating moisture to form the cloud. Thunderstorms produce heavy rain, strong winds and sometimes hail. More »

www.reference.com Science Earth Science Atmosphere

Cirrus clouds are made up of ice crystals that form when supercooled water droplets freeze. These wispy and thin clouds are usually at elevations higher than 20,000 feet and are created from other clouds that go through ... More »

www.reference.com Science Weather & Tides Clouds