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Alberto Hoeger ∙
pole reversals seafloor spreading
the inner core
Wandering with no pattern
A permanent magnet can affect magnets and electromagnets.
core
. The south magnetic pole of the compass points to Earth's north magnetic pole.
Wondering slowly with no pattern
movement of ocean crust.
magnetic north
north pole =magnetic south
refraction refraction
compass magnets can be deflected by earths magnetic field or other permanent magnets
The Crust
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.htmlEarth's outer core contains liquids that conduct electricity.
Earth's outer core is a liquid. Earth's core contains mostly iron and nickel.
Mars