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☆☆☆☆☆asthenosphere
the mantle and core are composed of different material
P waves refract as they travel through Earth. The shadow zone exists because of seismic waves. The shadows show when the earth spins around.
Wandering with no pattern
A permanent magnet can affect magnets and electromagnets.
Earth's core creates the magnetosphere.
Reflection
. 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.
movement of ocean crust.
magnetic north
north pole =magnetic south
The sun's pole reversal is tied to the cycle of sunspots.
The suns pole reversals are tied to its seasons. This can be shown on a graph.
compass magnets can be deflected by earths magnetic field or other permanent magnets
Samples of Earth's crust contain less iron than found in meteorites, and iron is a comparatively heavy element that would have sunk into the planet when it was being formed.
Reverse
Its Thrust!
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.
At ocean ridges
magnetic stuff...
