Where does the energy for plate tectonics come from?

Question:

Where does the energy for plate tectonics come from?

Tectonic plates:

Tectonic plates are pieces of the lithosphere - the topmost layer of the Earth. The lithosphere sits on top of the asthenosphere which caused it to crack into tectonic plates. This was because convection currents in the asthenosphere put strain on the lithosphere and fractured it.

Answer and Explanation:

The convection currents in the asthenosphere also give energy for tectonic plates to move. They arise due to material being heated in the asthenosphere and therefore rising. At the top, it cools and falls down. It is heated again and this cycle continues. These currents pull tectonic plates.


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Causes of Tectonic Plate Movement

from CLEP Natural Sciences: Study Guide & Test Prep

Chapter 11 / Lesson 8
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