You searched for:
“cumulus clouds”
cumulus clouds
Latin for "heap", they are heaps of separated cloud masses with flat bottoms and cauliflower tops.
These lumpy towers of clouds are usually found at low levels, below 6,500 feet and they are formed by updrafts of air, or thermals.
This entry is located in the following unit:
Meteorology or Weather Terms +
(page 3)