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Plate tectonics

semester exam

TermDefinition
Pangaea all the continents were once part of a supercontinent.
Continental drift suggested that continents 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 Earth's surface is made of ridge slabs of rocks, or plates, that move with respect to each other.
lithosphere the cold and rigid outermost layer.
divergent plate boundary forms where two plates seperate.
transform plate boundary forms where two plates slide past each other.
convergent plate boundary form where two plates collide.
subduction the denser plate sinks below the more buoyant plate in a process.
convection the circulation of material caused by differences in temperature and density.
Created by: user-2007346
 

 



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