Bellwork: What do you know about clouds?

Clouds were not classified until 1802, by Luke Howard. Like most scientists of the time he used Latin in his classification scheme.
Latin cumulus "a heap, pile, mass.
cummulus cloud: a dense, white, fluffy cloud with a flat base, a multiple rounded top, and a well-defined outline.

Stratus clouds: Stratus clouds are low-level clouds identified by straight layering with a consistent base. They mean rain if it is warm and snow if it is cold.
Latin "stratus, i m" coverlet, bed cover, blanket, bed or layer.

 

Latin cirrus, cirri m. curl, ringlet (hair); fringe
Cirrus cloud: a thin wispy fibrous cloud at high altitudes, composed of ice particles.