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Plate Tectonics. The theory that says the earth’s outer shell is not one solid piece, but instead is comprised of many moving plates. Continental Drift Theory. the world was once made up of a single super-continent, pangaea, that separated and drifted apart, forming the seven continents .
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Plate Tectonics • The theory that says the earth’s outer shell is not one solid piece, but instead is comprised of many moving plates
Continental Drift Theory • the world was once made up of a single super-continent, pangaea, that separated and drifted apart, forming the seven continents
Molten Rock • Magma – molten rock beneath the earth’s surface • Lava – molten rock on the earth’s surface (expelled by a volcano)
