Which of these models of Earth's interior is now considered to be the MOST likely description of the actual Earth?
A) solid core, within a molten outer core, rotating more rapidly than the rest of Earth
B) solid core within a molten outer core, the whole system rotating at exactly the same rate as the outer mantle and crust
C) solid core, within a molten outer core, rotating more slowly than the rest of Earth
D) totally fluid interior rotating at the same rate as the outer mantle and crust

Question

Quizplus · Accepted Answer

The current understanding is that Earth has a solid inner core within a molten outer core, and this inner core rotates more rapidly than the mantle and crust above it. This model is supported by seismic and geomagnetic evidence.

Which of These Models of Earth's Interior Is Now Considered