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Slow Flowing Solids Explain Tectonic Plate Movement

Run Time: 00:03:51

Partially melted rocks below the surface can be solid but flow like a liquid: a "fluid solid." Geologist Keith Klepeis of the University of Vermont discusses how this type of material can be simulated by using PlayDoh®. Animations demonstrate how rigid tectonic plates can move in relation to each other. The lithosphere (the solid layer at the surface) glides across a weaker, fluid solid layer (the asthenosphere) in the upper part of the mantle. Featured Scientists: Keith Klepeis, Ph.D. and David Sherrod, Ph.D.


NSES Standards

Grades 5-8 Standard A. Science as Inquiry:Develop descriptions, explanations, predictions, and models using evidence.
Standard D. Crustal plates constantly move in response to the movements of the mantle.

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