What appears to have caused the extensive cracking and streaking of the surface of Europa?
A) shrinking of the satellite as it cooled, producing extensive wrinkling
B) impacts by cometary debris breaking up the surface
C) expansion of the surface as the ice froze, bending and wrinkling the surface
D) tidal flexing by Jupiter, which broke the surface and released water that immediately froze

Question

Quizplus · Accepted Answer

Tidal flexing by Jupiter is believed to be the cause of the extensive cracking and streaking observed on Europa's surface. The gravitational pull from Jupiter causes the moon to flex, generating heat, which keeps the subsurface water liquid. This liquid water then rises to the surface, causing cracks and streaks to form as it freezes.

What Appears to Have Caused the Extensive Cracking and Streaking