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Plate Tectonics

Semester Exam

TermDefinition
Pangaea All the continents were once part of a supercontinet
Continental Drift Suggested that continents are in constant motion on the surface of the earth
Mid-ocean Ridge The mountain ranges in the middle of the ocean
Seafloor spacing 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 ricks, 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
sub duction 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-2007356
 

 



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