Question

what powers the earths electromagnetic field?
○ the sun
○ the spinning solid inner core
○ the spinning liquid outer core
○ the crust

question 3
in the movie the core, why is the earths magnetic field doomed?
(partially visible text: ...core is now liquid)

Explanation:

The Earth's electromagnetic field is generated by the geodynamo effect, which is caused by the movement of the conductive liquid outer core (composed mainly of iron and nickel) as the Earth rotates. The Sun does not power the Earth's own magnetic field. The inner core is solid, and the crust is the outermost layer with no role in generating the magnetic field.

Answer:

C. The spinning liquid outer core