9
QuizMultiple Choice

The Outer Planets — Quiz

Question 9 • Earth and Space Science

Which statement best describes the relationship between tidal heating and geologic activity in the moons shown?

Answer
A
Tidal heating has no effect on moon activity.
B
Moons with retrograde orbits always have the highest tidal heating.
C
Moons with higher tidal heating tend to show more geologic activity.
D
Only small moons show signs of tidal heating.

Explanation

Tidal forces can stretch and flex a moon as it orbits its planet, producing internal heat. Greater tidal heating can help power volcanism and other geologic activity, so moons with more tidal heating tend to be more geologically active. The statement that best describes this relationship is “Moons with higher tidal heating tend to show more geologic activity.”

AI-written and checked against the verified answer.

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