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plate tectonics

semestor exam

TermDefinition
pangaea all the continents were once part of a supercontinent
continental drift suggested that coninents are in constant motion on the surface of Earth
mid-ocean ridge the mountain ranges in the middle of the oceans
seafloor spreading the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
plate tectonics earths surface is made of ridge slabs of rocks, or plates, that move with respect to each other
lithosphere the cold rigid outermost layer
divergent plate boundary forms where two plates separate
transform plate boundary forms where two plate slide past eachother
convergent plate boundary forms where two plates colide
subduction the denser plate sinks below the more buoyant plate in a process
convection the circulation of a material caused by differnces in temperature and density
Created by: user-2007349
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