• the study of how the surface of the earth is formed, how the separate pieces of it move, and the effects of this movement


    Plate tectonics meaning & definition 1 of Plate tectonics.


  • the theory that the earths surface is made of large layers of rock that are always moving, causing earthquakes and volcanoes, and explaining the creation of the varied features of the earths surface

    Plate tectonics meaning & definition 2 of Plate tectonics.

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