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8 terms

earth on the move

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asthenosphere
the plasticlike layer below the lithosphere
continental drift
continents have moved slowly to their current locations
convection current
entire cycle of heating, risisng, cooling, and sinking
lithosphere
two parts combined
pangaea
all land
plate
move on a plasticlike layer of the mantle
plate tectonics
earth's crust and part of the upper mantle are broken into sections
seafloor spreading
The process that creates new sea floor as plates move away from each other at the mid-ocean ridges