Plate tectonics is the theory that Earth's outer shell, or lithosphere, is divided into large, rigid plates that move and interact with each other. These plates float on the semi-fluid asthenosphere beneath them. The movement of these plates is driven by processes like seafloor spreading, subduction, and continental drift. When plates collide, they can create mountains, earthquakes, and volcanic activity. The interactions between tectonic plates shape the Earth's surface and play a crucial role in the geology and geography of our planet.
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