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plate tectonics

TermDefinition
continental drift wegener hypothesis that earth continents were joined as a single landmass called pangea that brake apart about 200 million year ago and slowly moved to their present positions.
convergent boundarie a place where two of earth tectonic plate are moving toward each other is associated with thenches islands are and folded mountains.
divergent boundury place where two of earth tectinic plate are moving apart is associated with volcanism earthquake and higt heatflow,and is found prime rily an te seafloor
tranfor boundary place where two tentonic plate slide horontally past each another that is charocterizet by lang faolts and shollow earthquakes
ridge push tectonic process assaciated with convection crurrent in earth mantle that accur when the weight of on elevated ridge pushes on to seraterate toward a subduction zone.
rift valley long narrow depression that form when contintel crust beging to separate
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