weather theoryFAA-published question bank (Private Pilot, 2008)
Clouds are divided into four families according to their
A
outward shape.
B
height range.✓ Correct Answer
C
composition.
Explanation
Clouds are grouped into four families by the height range in which they form: low, middle and high clouds, plus clouds with extensive vertical development (PHAK Chapter 12). Shape (cumulus, stratus) and composition (water or ice) describe clouds within those families but are not the basis of the four-family division.
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