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plate tectonics

semester exam

TermDefinition
pangaea all the continents were once part of a supercontient
continenental drift suggested that all continents are in constant motion on the surface or earth
mid-ocean ridge the mountains ranges in the middle of the oceans
seafloor spreading the process by which new oceanic crust forms a long 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 and rigid outermost layer
divergent plate boundary forms where two plates separate
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-2007388
 

 



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