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chapterten

plate tectonics

QuestionAnswer
continental drift hypothesis that continents drifted across the ocean basins
Weneger scientist that proposed the continental drift theory, but could not explain the force behind plate movement
convection currents the force responsible for plate movement
mid-ocean ridge landform created when two oceanic plates diverge
magnetic reversals the alternating pattern of earth's magnetic field found in rocks near a mid-ocean ridge
volcanic mountain range landform created when an oceanic plate is subducted beneath a continental plate
sea-floor spreading the process where rising magma at mid-ocean ridges produces new crust
divergent plate boundary where plates are moving apart
convergent plate boundary where plates are moving together
transform plate boundary where plates move sideways past each other
subduction zone area on Earth's crust where one plate plunges down under another plate; produces a trench
oceanic crust high density crust, made of rock similar in composition to basalt
continental crust low density crust, made of rock similar in composition to granite
terrane accretion lithospheric pieces becoming part of a continent at a convergent boundary
folded mountain range landform created when two continental plates collide
lithosphere the solid, outer layer of the Earth, consisting of the crust and the upper part of the mantle
Pangaea the supercontinent that formed about 300 mya when all Earth's landmasses were joined together
island arc landform created when one oceanic plate subducts beneath another oceanic plate
plate tectonics theory that explains why and how continents move, and is the study of major landforms on Earth's surface
asthenosphere the solid, plastic layer of the mantle beneath the lithosphere, which allows plates to move on top of it
Created by: sisteele
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