Question

Which descriptions refer to cumulus clouds? Check all that apply.
are fluffy
form layers
are usually gray
form 1–1.5 miles above Earth
can extend up to 10 miles into the sky

Answer 1

1) are fluffy

4) form 1-1.5 miles above Earth

5) can extend up to 10 miles into the sky.

Answer 2

The correct answers are

a.  are fluffy  

d. form 1–1.5 miles above Earth

e. can extend up to 10 miles into the sky

Reason -

Cumulus clouds are puffy clouds which resembles a floating cotton. These clouds starts forming above the ground at a height of 1000 meters (nearly equals to  1–1.5 miles above Earth) . These are also known as thunderstorm clouds which grows vertically  and have their top extending upto a height of 12000 m (7 to 8 miles)