Multiple choice

What is the proper name for a thunderstorm?

  1. Cumulus

  2. Stratus

  3. Cirrus

  4. Cumulonimbus

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cumulonimbus clouds are heavy, dense, and towering vertical clouds associated with extreme weather, including thunderstorms, lightning, and heavy precipitation. Cumulus clouds are fluffy and fair-weather, stratus are flat and layered, and cirrus are high and wispy.