To play, select one of the ten principal cloud forms given below. Then click on the picture that matches the following description:

Stratus
Low level layer or mass, grey, the same appearance all over, thick and foggy.

Ten principal cloud forms
cirrus | cirrostratus | cirrocumulus | altostratus | altocumulus | nimbostratus | stratocumulus | stratus | cumulus | cumulonimbus

Cloud classification information

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