Which of these Galilean satellites is most geologically active
A)Io
B)Europa
C)Callisto
D)Ganymede

Question

Quizplus · Accepted Answer

Io is the most geologically active of the Galilean satellites, with over 400 active volcanoes and frequent eruptions. The volcanic activity is caused by tidal forces from Jupiter and its neighboring moons, which generate intense heat and friction within Io's interior. Europa and Ganymede also exhibit signs of geologic activity, such as cracked or tectonic features, but not to the same extent as Io. Callisto appears to be geologically inert.

Which of These Galilean Satellites Is Most Geologically Active