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Plate Tectonics

TermDefinition
Pangaea Name of the landmass when all of Earth's continents were connected. Broke apart 200 million years ago, creating today's continents.
Transform Boundary A place where two tectonics plates slide past each other in opposite directions.
Convergent Boundary A place where two plates move toward each other
Divergent Boundary A place where two plates move away from each other
Plate Boundary The place where two plates (pieces of Earth's crust) meet.
Continental Drift The hypothesis that the continents slowly move Earth's surface
Plate Tectonics The theory that describes how large pieces of Earth's outermost layer, called tectonic plates, move and change shape.
Tectonic Plate A block of lithosphere that consists of the crust and the rigid (hard), outermost part of the mantle.
Sea-floor spreading the process by which new oceanic lithosphere (sea floor) forms when magma rises to Earth's surface at mid-ocean ridges and solidifies, as older, existing sea floor moves away from the ridge.
Convection The movement of matter due to differences in density.
Created by: whackman10
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