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pcmsplatemovement

Plate Movement vocab

TermDefinition
continental drift the hypothesis that Earth's continents move on Earth's surface
convection current circulation pattern in which material is heated and rises in one area, then cools and sinks in another area
convergent boundary a boundary along which two tectonic plates push together
divergent boundary a boundary along which two tectonic plates move apart
transform boundary a boundary along which two tectonic plates slide or scrape past each other
hot spot an area where a column of hot material rises from deep within a planet's mantle
magnetic reversal a switch in the direction of Earth's magnetic field so that magnetic North Pole becomes the magnetic South Pole
pangea a hypothetical supercontinent that once included all the landmasses on Earth
subduction the process by which an oceanic tectonic plate sinks under another plate.
convection currents What causes plates to move?
Continental and oceanic What are the two types of crust?
lithosphere Where are tectonic plates found?
Created by: neilebennett
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