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Tectonic plates can stay away from each other, it is the divergent movement. Sometimes one plate will move under the other. Some regions, such as coastal California, move quite fast in geological terms — almost two inches a year — relative to the more stable interior of the continental United States. For general purposes, the Earth can be divided into four basic layers: the inner core, the outer core, the mantle and the crust. Wegener didn't have an explanation for how continents could move around the planet, but researchers do now: plate tectonics. There seems to be a lot of misconceptions being bandied about, I want to try and address these and answer the question as simply as possible. The majority of transform faults link the offset segments of oceanic ridges. The convection currents in the much hotter mantle continually move the plates about 1/2 to 4 inches per year. At the boundaries between these huge plates of rock and soil, the plates sometimes move apart, and magma , or molten rock, comes to … Plate tectonics - Plate tectonics - Transform faults: Along the third type of plate boundary, two plates move laterally and pass each other along giant fractures in Earth’s crust. When the concept of seafloor spreading came along, scientists recognized that it was the mechanism to explain how continents could move around Earth’s surface. There are three main processes that drive continental drift. The movement of tectonic plates is most evident at the boundaries between the plates. At the “seams” where tectonic plates come in contact, the crustal rocks may grind violently against each other, causing earthquakes and volcano eruptions. When the plates move they collide or spread apart allowing the very hot molten material called lava to escape from the mantle. The rigid plates of the Earth’s surface are in constant motion relative to each other. This is because solids move, flow, and deform very, very slowly. Transform faults are so named because they are linked to other types of plate boundaries. Plate tectonics is the theory that Earth's outer shell is divided into large slabs of solid rock, called “plates,” that glide over Earth's mantle , … This is called subduction. Its outer shell is made up of huge slabs of moving rock called tectonic plates. Earth’s surface appears to be still, but it is actually constantly on the move. There are three main types of boundaries: Convergent Boundaries - A convergent boundary is where two tectonic plates push together. Tectonic Plates Move at Snail’s Pace. It creates a ridge which is filled with magma. Despite immense temperatures, the Earth's core, composed largely of iron, is solid. Their movements change the planet’s features, depending on how the plates meet. These plates move very slowly across the surface of the Earth as though they were on a conveyor belt. A conception of the Earth's structure is necessary to an understanding of plate tectonics. Theory of Plate Tectonics. While a convergent movement is when two plates go in direction of each other. The theory, called plate tectonics, is that the Earth's crust, or lithosphere, comprises many plates that slide over a lubricating asthenosphere layer. The plates fit together like puzzle pieces to make up Earth’s surface. These plates are moving at a very slow pace of about a few centimeters a year. Knowing how tectonic plates move allow scientists to better understand how the interior of the Earth convects, chemically mixes and loses heat via seafloor spreading and volcanism. Like the scientists before us, we will now merge the ideas of continental drift and seafloor spreading into the theory of plate tectonics. When two plates move in opposite direction, it is a transform movement.

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