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Science Quizzz

science quiz on 6.1 and 6.2 about plate tectonics

QuestionAnswer
inner core the very center of the earth
outer core layer of liquid metals that surround the inner core
mantle Earth's thickest layer that surrounds the outer core
crust outermost layer of the earth
continental crust continents and major islands
oceanic crust all the ocean floors
lithosphere earth's crust and the very top of the mantle
asthenosphere a layer of hotter, softer rock in the upper mantle and the lithosphere sits on top of it
tectonic plates the earth is broken up into many large and small plates of rock, the plates fit together like a jigsaw puzzle, makes up the surface of the earth
pangea alfred wegener believed the continents had been joined in one supercontinent, pangea
the theory of plate tectonics a theory stating that the Earth's lithosphere is broken into large moving pieces which carry both continental and oceanic crust
mid-ocean ridges huge underwater mountain ranges
sea floor spreading molten rock rises through cracks in the oceanic crust, it then cools to from new oceanic crust, the old crust is pulled away to make room for the new material
trenches deep canyons-in the sea floor
convection energy transfer by the movement of a material, hot soft rock heats up, becomes less dense and rises, at the surface the rock cools, becomes more dense and sinks
convection current motion that transfers heat energy in the material
slab pull occurs where gracity pulls the edge of a cool, dense plate into the asthenopshere
ridge push occurs when material from a mid-ocean ridge slides downhill from the ridge
Created by: dancerel123
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