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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 the 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
sea floor spreading new oceanic crust forms at a mid-ocean ridge as old oceanic crust moves away
convenction circulation of material caused by diffrences in temputure and density
divergent plate boundary whare two plates seperate
plate tectonics theory that Earth's surface is made of rock plates that move with respect to each other
subduction sinking of a denser plate below a more buoyant plate at a convergent plate boundary
transform plate boundary where two plates slide by each other
Created by: user-2006885
 

 



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