Does anyone know what makes the core of the earth spin?

Question

The core of the earth actually spins in the opposite direction that the earth rotates. Interesting huh? I always thought the tidal effects of the moon might have had some influence on this.

Answer 1

The earths core spins because of the angular momentum left over from the birth of the solar system. Since the core is liquid, it will turn at a slightly different rate than the solid mantle and crust (along with other fluid motions). This slight difference in turning rate is responsible for the yearly change in magnetic declination (see ref below).

Answer 2

You do know that the Earth spins about its axis, and that the core is part of the Earth, right? The spin came about, as all planetary spins do, by the physics of formation of planets from the disc of material that surrounded the sun.

The core spins at the same rate as the Earth. There is, scientists believe, a current of molten iron that runs along or en the core that is responsible for the magnetic field.

Answer 3

This is an artifact of the formation of the Earth from the cloud of dust in the proto solar system. By conservation of momentum, the coalescing dust's spin increased just as a skater's spin increases when they bring their arms to their body.

The Earth's spin is slowing however due to gravitational damping by the Moon. 300 million years ago, the day was 2 hours shorter.

Answer 4

its axis maybe?