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Objective 9

TermDefinition
continental drift hypothesis that continents ate in constant motion.
mantle middle layers of earth situated between the crust above and the core below.
pangaea ancient supercontinents,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-rindge as old oceanic crust moves away.
convection circulation of material caused by differences in temperature and density.
convergent plate boundary where two plates collide.
divergent plate boundary where two plates separate.
lithosphere cold,rigid outermost rock layer of earth.
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-2006811
 

 



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