Geography

Guest

21 October, 04:53

The presence of a magnetic field is a good indication that the Earth:

A. has a liquid metal outer core, spinning rapidly as it rotates.

B. a huge iron meteorite lies somewhere high up in the mantle, not in the core.

C. the Earth's interior has had time to solidify, with a rigid bar magnet created.

D. the Earth's interior must be completely molten to the center.