1. Which cloud type is best described as sheets or layers that cover much or all of the sky?
A. Cumulus
B. Cirrus
C. Stratus
D. Alto
2. Which term means "rainy cloud"?
A. Stratus
B. Nimbus
C. Cirrus
D. Cumulus
3. Compared to clouds, fogs are___.
A. Colder
B. Of a different composition
C. At lower altitudes
D. Drier