The Dynamo Theory holds that:
A)lightning plays a major role in generating our magnetic fields.
B)any other planet of similar density will also have a strong magnetic field.
C)the Earth's core, like Mercury's, is now a solid, rigid bar magnet.
D)magnetic fields are generated by rapidly spinning, fluid magnetic interiors.
E)the Earth's magnetic field must switch polarities every few million years.

Question

Quizplus · Accepted Answer

The Dynamo Theory states that magnetic fields are generated by rapidly spinning, fluid magnetic interiors. The Dynamo Theory proposes that magnetic fields are generated by the movement of fluid metallic substances in the planet's interior, specifically the Earth's core. As the core rotates and moves, it creates electrical currents that generate a magnetic field. This theory is widely accepted as the most likely explanation for how Earth's magnetic field is generated.

The Dynamo Theory Holds That