How do plate tectonics work?

Question:

How do plate tectonics work?

What are tectonic plates?

Tectonic plates are fragments of the lithosphere - the topmost layer of solid Earth. It sits on top of the asthenosphere. Tectonic plates can move and interact with each other.

Answer and Explanation:

Tectonic plates move due to convection currents in the asthenosphere. This involves a circular flow of viscous rock in the asthenosphere (due to density differences) which puts strain on the tectonic plates and causes them to move.


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Plate Tectonics: Theory & Definition

from General Studies Earth & Space Science: Help & Review

Chapter 7 / Lesson 5
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