Earth Systems (A): STUDY: Vocabulary

Vocabulary

Arenal volcano, Costa Rica. Photo courtesy of Clearly Ambiguous/Flickr.

Licensed CC BY.

Convection: process in which material is circulated by heat.

Convection Current: process in Earth's mantle that drives tectonic plate movement. It is associated with heat transfer taking place in Earth's mantle.

Plate tectonics: theory that the Earth's crust is moving as a series of large chunks. It combines the ideas of continental drift and seafloor spreading.

Tectonic plate: large parts of the lithosphere.

Subduction: process in which one plate moves beneath another. Occurs at convergent plate boundaries.

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