Despite its small size, Io has retained a molten core because of
A) radioactive decay of heavy elements.
B) gravitational contraction.
C) heating from Jupiter's magnetic field.
D) flexing by strong tidal forces.

Question

Quizplus · Accepted Answer

Io experiences intense tidal forces due to its proximity to Jupiter and its interaction with other Galilean moons. These forces cause Io's interior to flex, generating heat through friction, which helps maintain its molten core.

Despite Its Small Size, Io Has Retained a Molten Core