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The inner core
the inner core
Wandering with no pattern
. The south magnetic pole of the compass points to Earth's north magnetic pole.
Comparing the composition of the crust to other bodies in the solar system.
The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.
The iron nickel core has been determined to actually exist from the examination of meteorites, from the gravitational field of Earth, and from the Earth's density in comparison to its volume.
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compass magnets can be deflected by earths magnetic field or other permanent magnets
The molten bit of the Iron core.
The continental crust is up to 70 km thick.
Tidal heating supports the dynamo theory. Magnetized lunar rocks and asteroids are used for evidence of this.
http://phys.org/news/2012-10-evidence-dynamo-asteroid.html
Earth's outer core contains liquids that conduct electricity.
Earth's outer core is a liquid. Earth's core contains mostly iron and nickel.
Liquid.APEX
