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Whitten Plates

continental drift and earth's layers

TermDefinition
Continental Drift Theory that states the continents were once together and moved away from each other over time
Alfred Wegner The scientists who first proposed the theory of continental drift
Seismic Data Earthquake data or information
Pangaea the Super Continent that means "all land"
Seafloor spreading the process where lava cools and hardens causing the seafloor to grow apart
Lava molten rock that is on Earth's surface
magma molten rock that is under Earth's surface in the mante
mantle middle layer of Earth that is the thickest layer. It is made of molten rock called magma
crust outer layer of Earth that is made of two types of rock
continental crust the less dense crust type that is made of granite
oceanic crust the more dense crust type that is made of basalt
lithosphere the scientific name for the crust and top of mantle
asthenosphere the rest of the mantle, under the lithosphere
inner core the spinning solid part of the core
outer core the slow spinning liquid part of the core
convergent boundary plates moving together
divergent boundary plates moving apart
transform boundary plates sliding past each other
rift valley created when two continental crust plates move apart from each other
subduction zone occurs when oceanic crust sinks beneath continental crust at an oceanic/continental convergent boundary
Created by: swhitten
Popular Earth Science sets

 

 



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