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Cards-(pg. 39-40)

TermDefinition
Tectonic plates -Huge pieces of lithosphere that slowly move on the asthenosphere and consist of the crust and the rigid, uppermost part of the mantle.
North American plate -A tectonic plate division of the lithosphere that includes the continental crust of Greenland, North America, Siberia, and the surrounding oceanic crust.
Eurasian Plate -A tectonic plate division of the lithosphere, including most of the landmasses of Europe and Asia.
African Plate -A tectonic plate of the lithosphere that includes the continental crust of Africa and the surrounding oceanic crust.
South American plate -A tectonic plate division of the lithosphere that includes the continental crust of South America and the oceanic crust extending to the Mid-Atlantic ridge.
Pacific Plate -A tectonic plate division of the lithosphere that is composed entirely of oceanic crust and lies beneath the Pacific ocean.
Indo- Australian plate -A tectonic plate division of the lithosphere that includes the continental crust of India and Australia and the surrounding oceanic crust
Crustal Rock Material -Crust can be either oceanic, which is the thin dense, or continental, which is thick and less dense.
Antarctic Plate -A tectonic plate division of the lithosphere that includes the continental crust of Antarctica and the surrounding oceanic crust.
Density of Plates -The amount of matter in a given matter in a given space or volume; oceanic crust is thinner, but denser than continental crust.
Plate boundary -The place where two different plates have contact.
Convergent Boundary -Occurs when two tectonic plates move toward each other and collide
Subduction -The process in which a denser plate is pushed downward beneath a less dense plate when plates converge; occurs at continental to oceanic boundaries and oceanic to oceanic boundaries.
Volcanic Eruptions -Events in which molten rock spews out from the mantle to the surface of Earth as ash, lava, and gases; major geological events that occur when a dense plate subducts below a less dense plate
Mountain Building -Major geological event that occurs when continental plates of equal density converge, resulting in mountain chains.
Divergent Boundary -Occurs when two tectonic plates move away from each other.
Spreading Ridges -Ridges formed from new crustal material at diverging oceanic plate boundaries.
Earthquakes -Major geological events that occur when plates shift suddenly and release stored energy.
Ocean Basin -An area of crust covered by sea water and surrounded by areas of continental crust.
Transform Boundary -Occurs when two tectonic plates slide past each other.
Created by: James__881382
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