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objective 9

vocab

TermDefinition
continental drift hypothesis that continents are in constant motion
mantle middle layer of earth situated between the crust above and core below
pangaea ancient supercontinent composed of land that forms today's continents
mid-ocean ridge mountain range located on the seafloor in the middle of the ocean
seafloor spreading new oceanic crust forms at a mid ocean ridges as old oceanic crust moves away
convection circulation of material caused by differences in temp and density
convergent boundary where 2 plates collide
divergent boundary where 2 plates seperate
lithosphere cold rigid outermost rock layer of earth
plate tectonics theory that earth's surface is made of rock plates that move with respect for each other
subduction sinking of a denser plate below a more bouyant plate at a convergent plate boundary
transform plate boundary where 2 plates slide past eachother
Created by: user-2006890
 

 



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