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Theory of Continental Drift
The theory hypothesized by scientist Alfred Wegener stating that "the continents once formed part of a single supercontinent that began breaking up into smaller continents about 200 million years ago (during the Mesozoic Era)
The process by which new ocean lithosphere(sea floor) forms as magma and rises to Earth's surface and solidifies at a mid-ocean ridge
Theory of Plate Tectonics
The theory that explains why and how continents move and is the study of the formation of features in Earth's crust
The process in which two tectonic plates move towards each other/collide with each other
The movement of heated material due to differences in density that are created by differences in temperatures
An area created when cooler, denser water sinks and the warmer water rises to the surface
A force exerted when the lithosphere becomes dense and subducts into the asthenosphere. The edge pulls the rest of the plate with it.
A piece of lithosphere that has a unique geologic history that differs from the histories of surrounding lithosphere
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