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