The dynamo theory says that a planet will have a strong magnetic field if it has
A) fast rotation and a solid core.
B) slow rotation and a liquid core.
C) fast rotation and a liquid core.
D) slow rotation and a solid core.

Question

Quizplus · Accepted Answer

The dynamo theory states that a planet will have a strong magnetic field if it has a fast rotation and a liquid core. The fast rotation causes strong convection currents in the liquid core, which generate a dynamo effect that produces a strong magnetic field. A solid core would not be able to generate these convection currents, and slow rotation would not generate enough energy to sustain the dynamo effect.

The Dynamo Theory Says That a Planet Will Have a Strong