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Plate tectonics is the scientific theory explaining that the Earth's outer shell consists of multiple moving plates rather than a single solid mass. This theory incorporates the concept of continental drift, which suggests that the Earth was once a single supercontinent, Pangaea, that gradually separated into the seven continents we recognize today. Additionally, the role of molten rock is central to these processes, with magma being the molten rock beneath the Earth's surface, while lava is the molten rock expelled from volcanoes onto the surface.
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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)
