What evidence suggests that Enceladus has ongoing geological activity?
A)Voyager 2 photographed liquid nitrogen geysers 10 kilometers tall.
B)Lack of impact craters on much of its surface, evidence of ice flows from possible volcanicactivity, and geysers that supply material for the E-ring.
C)Voyager 1 showed sulfur eruptions all over its pizza-pie colored surface.
D)Enceladus is located within Saturn's Roche limit, and ready to blow up.
E)Enceladus undergoes severe tidal stresses from its resonance with Titan.

Question

Quizplus · Accepted Answer

The lack of impact craters on much of its surface, evidence of ice flows from possible volcanic activity, and geysers that supply material for the E-ring all suggest ongoing geological activity on Enceladus. Voyager 2 did not photograph liquid nitrogen geysers, and Voyager 1 did not show sulfur eruptions on Enceladus. While Enceladus is located within Saturn's Roche limit and undergoes tidal stresses from its resonance with Titan, these factors on their own do not provide evidence of ongoing geological activity. The lack of impact craters on much of its surface suggests that the surface is relatively young and constantly evolving. The presence of ice flows from possible volcanic activity indicates ongoing geological processes. Additionally, geysers that supply material for the E-ring provide further evidence of ongoing activity on Enceladus.

What Evidence Suggests That Enceladus Has Ongoing Geological Activity