What is the most important reason why an icy moon is more likely to be geologically active than a rocky moon of the same size?
A)Ice has a lower melting point than rock.
B)Ice is less rigid than rock.
C)Ice contains more radioactive elements than rock.
D)Ice is affected by tidal forces to a greater extent than rock.
E)Ice is less dense than rock.

Question

Quizplus · Accepted Answer

Ice has a lower melting point than rock, which means that it is more likely to melt and become active under the right conditions, such as tidal forces or internal heat sources.

Answer: D
 Ice is affected by tidal forces to a greater extent than rock, which can lead to increased geologic activity. Tidal forces can cause the interior of an icy moon to heat up, leading to melting and volcanic activity.

Therefore, the correct answer is D.

What Is the Most Important Reason Why an Icy Moon