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.
E) fast rotation and a gaseous core.

Question

Quizplus · Accepted Answer

The dynamo theory suggests that a strong magnetic field is generated by the motion of conducting fluids within a planet's core. Fast rotation and a liquid core facilitate the necessary fluid motion and convection currents to sustain a magnetic field.

The Dynamo Theory Says That a Planet Will Have a Strong