The outer three Galilean moons of Jupiter differ from Io,the innermost Galilean moon,by surfaces of:
A) smoothly polished rock.
B) carbon dioxide ice.
C) sulfur.
D) water ice.

Question

Quizplus · Accepted Answer

The outer three Galilean moons of Jupiter (Europa, Ganymede, and Callisto) are covered with water ice, while the innermost Galilean moon, Io, has a surface that is dominated by sulfur and sulfur dioxide, with some volcanic rocks. Carbon dioxide ice is not present on any of these moons as it requires temperatures much lower than those found in the jovian system.

The Outer Three Galilean Moons of Jupiter Differ from Io,the