The Earth: Everyone’s favorite nested sphere.

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Presentation transcript:

The Earth: Everyone’s favorite nested sphere

Earth’s magnetic field is probably generated by the motion of the highly conducting liquid Outer Core

Motion in the Outer Core From: Arnou

Mantle Convection and Plumes Convection at ocean ridges cools the mantle Mantle plumes (hot spots) cool the liquid core This means: The function of plate tectonics is to cool the mantle! The function of plumes is to cool the core!

Atmosphere From NASA

Created by Nicolas Barth 2007 Geology 114A University of California, Santa Barbara Some images herein borrowed from websites have not been credited

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