Plate Tectonics

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We don’t typically think of the ground beneath our feet as anything but solid, but over geologically long time scales, even mountains can flow. Buoyant convection inside the Earth’s mantle is thought to drive the plate tectonics that have shaped the Earth as we know it. The video above explains some of the major processes and events that shaped the modern North American continent, including collisions, subduction, volcanism, and erosion. (Video credit: Ted-Ed)

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