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The theory of plate tectonics holds that the Earth's crust is composed of mobile plates, which have moved throughout Earth's history. This movement is caused by thermal convection currents produced by the Earth's mantle.

Plate tectonics - Wikipedia

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Plate tectonics is a scientific theory describing the large-scale motion of 7 large plates and the ...

Plate tectonics | Define Plate tectonics at Dictionary.com

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Plate tectonics definition, a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic ...

Plate Tectonics | Definition of Plate Tectonics by Merriam-Webster

www.merriam-webster.com/dictionary/plate tectonics

Define plate tectonics: geology : a scientific theory that the Earth's surface is made of very large sections that move very slowly; also : the…

What is Plate Tectonics? | Plate Tectonics - Live Science

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Mar 21, 2016 ... Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle.

What is the theory of plate tectonics? | Reference.com

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The theory of plate tectonics states that the Earth's surface, the upper mantle and crust, was once made up of enormous rock plates that broke into smaller pieces ...

Plate tectonic theory - The Free Dictionary

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plate tectonic theory. Also found in: Thesaurus, Wikipedia. Related to plate tectonic theory: Seafloor Spreading Theory. ThesaurusAntonymsRelated ...

Theory of Plate Tectonics ( Read ) | Earth Science | CK-12 Foundation

www.ck12.org/earth-science/Theory-of-Plate-Tectonics/lesson/Theory-of-Plate-Tectonics-MS-ES/

Jan 4, 2013 ... Like any great theory, plate tectonics makes a tremendous amount of sense. ... In general, what does the theory of plate tectonics explain?

Plate Tectonic Theory: Plates and Interplate Relationships

csmres.jmu.edu/geollab/vageol/vahist/plates.html

Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's ...

plate tectonics -- Kids Encyclopedia | Children's Homework Help ...

kids.britannica.com/ebk/article-9346101/plate-tectonics

Double-click it to look it up in Merriam-Webster's Student Dictionary. ... The theory , or idea, of plate tectonics says that Earth's outer layer is made up of large, ...