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Plate Tectonics

Gilkey - Inside Restless Earth - C. 4

MeaningTerm
The thin, outermost layer of the Earth, or the uppermost part of the lithosphere crust
the outermost, rigid layer of the Earth that consists of the crust and the rigid upper part of the mantle lithosphere
the strong, lower part of the mantle between the asthenosphere and the outer core mesosphere
the soft layer of the mantle on which pieces of the lithosphere move asthenosphere
the liquid layer of the Earth's core that lies beneath the mantle and surrounds the inner core outer core
soild, dense ball of iron inner core
the theory that continents can drift apart from one another and have done so in the past continental drift
all the Earth's land masses joined together were once called this Pangaea
as tectonic plates move away from each other, the sea floor spreads apart and magma rises to fill in the gap sea-floor spreading
the theory that the Earth's lithosphere is divided into tectonic plates that move around on top of the asthenosphere plate tectonics
process by which hot material from deep within the Earth rises while cooler material near the surface sinks convection
when two tectonic plates push into one another, this is the boundary where they meet convergent boundary
when two tectonic plates move away from each other this is the boundary they create between them transform boundary
this is used to measure the rate of tectonic plate movement Global Positioning System or GPS
Created by: gilkey
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