1. You observe a cloud at an altitude of 10,000 feet. This cloud name would have the prefix:

a. Alto
b. Cirro
c. Strato
d. Medial
e. Nimbo
answer: a

2. The cloud type that is best described as sheets or layers that cover much or all of the sky is termed:
a. Cumulus
b. Stratus
c. Cirrocumulus
d. Cumulonimbus
e. Cirrus
answer: b

are these correct?

To determine the correct answers, we need to understand the prefixes and types of clouds defined in meteorology.

1. The correct answer for the first question is (a) Alto. The prefix "Alto" is used to describe clouds that have a middle-level altitude ranging from approximately 6,500 to 20,000 feet.

2. The correct answer for the second question is (b) Stratus. Stratus clouds are defined as low-level clouds that appear as thin, uniform sheets or layers covering much or all of the sky. They are generally associated with stable atmospheric conditions.

So, your answers are correct: a for the first question and b for the second question.