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Geology

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Kiera Lakin

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4y ago
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Cards in this guide (11)
What causes the pressure that allows diamonds to form in the mantle

The weight of the rocks in the crust and upper mantle results in the pressure that allows diamonds to form.

The top layer of the ocean floor is primarily

The bulk of the ocean floor is composed of ?

After an earthquake which type of seismic wave arrives second at a seismometer

S waves arrive second after an earthquake.

Oceanic crust slides under continental crust during subduction because oceanic crust is

denser

What is true about compasses

compass magnets can be deflected by earths magnetic field or other permanent magnets

What does the passive continental margin have that the active margin does not

Continental rise is something the passive continental margin has that the active margin does not

The continental crust is what

The continental crust is up to 70 km thick.

What evidence supports dynamo theory

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.

New crust forms

At ocean ridges

Which is required for karst topography to form

Limestone

Which of the following is true of permanent magnets

magnetic stuff...

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