Which compositional zone makes up almost two thirds of the Earth's mass?
The source of Earth's magnetic field may be
Which two metals make up the core?
Pressure increases as you ______________ to the core.
How thick is the Continental crust?
How thick is the oceanic crust?
A softer layer of solid rock that is hot enough to be able to flow.
Upper layer of Earth, which includes the crust and a small amount of the mantle.
The _______________ is moving over the top of the asthenosphere.
Composed of mainly igneous rock (basalt).
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