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Plate Tectonics

Module F; Part 2

QuestionAnswer
tectonic plate one of the pieces of Earth's crust that rests and moves on the semi-liquid mantle
mantle the layer of Earth that lies just below the crust and above the outer core.
convergent boundary forms where two tectonic plates are colliding
divergent boundary forms where two tectonic plates are moving away from each other
transform boundary a boundary between two tectonic plates that are slide past each other
plate tectonics the theory that describes and explains the way that the continents separated from a supercontinent called Pangea
convection current slow, circular movements of semi-solid rock in Earth's mantle, driven by heat from the core, causing hot, less dense material to rise and cooler, denser material to sink, thereby moving tectonic plates above them
continental crust less dense rocky material that makes up the continents
oceanic crust the more dense part of Earth's crust that lies beneath the oceans
mid-ocean ridge undersea mountain range that forms at a divergent boundary, where two tectonic plates are moving apart
subduction the process in which one tectonic plate slides under another in a convergent boundary
fault a crack in the crust where it has been fractured; typically happens at transform boundaries but can happen anywhere in the crust
earthquake a sudden shift along a fault line or with a volcanic eruption that releases a sudden burst of energy that travels through Earth
deep ocean trench a very deep area created at the bottom of the ocean where a subducting oceanic plate gets pulled beneath another oceanic plate or a continental plate.
volcano a hill/mountain formed when magma pushes/rises to Earth's surface and erupts/
 



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