Which Feature Seen on Saturn's Moon Iapetus Suggests That Its

question 34

Multiple Choice

Which feature seen on Saturn's moon Iapetus suggests that its interior must have been warm at some time in the past?

• A) the presence of several large impact features
• B) the fact that one half is very bright while the other half is very dark
• C) the observation of extinct volcanoes on its surface
• D) the presence of a steep ridge running along its equator