Weather Quiz: Clouds

Correct!


These clouds form in the highest range for clouds, above 18,500 feet. Snow crystals form much lower. Cirrus clouds are composed almost exclusively from ice crystals suspended in the atmosphere and usually indicate that there will be a change in the weather between 12 and 36 hours from the time of observation.

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Photographer: Ralph F. Kresge
NOAA Photo Collection
4. A low, very dark uniform cloud is covering the whole sky and a steady rain is falling. What type of cloud is this?

A. Cumulonimbus
B. Stratus
C. Cirrocumulus
D. Nimbostratus

Choose any one of the four answers above.