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Plate Motion

Plate Tectonics

TermDefinition
Earthquake Any shaking or rapid motion of Earth's solid outer layers
Fault a zone of weakness or a crack where previous motion occured.
Epicenter the location at the Earth's surface directly above the starting point of an earthquake.
Seismometer an instument that detects vibrations of the ground
crust outermost layer of our planet
Ring of Fire A ring of the most of volcanoes and seismic events around the edges of the Pacific Ocean
tsunami A big wave usually caused by a earthquake or landslide under water
Alfred Wegener The scientist who came up with the theory of continental drift
Continental Drift the theory that all the continents fit together and eventually broke into continents
Pangea "the super continent", or when all continents were together
Convergent boundary colliding plates
Divergent boundary separating plates
subduction zone when a oceanic plate dives underneath a continental plate
island arcs island groups caused by rising magma plumes from decending plates
Transform boundary where plates slide past each other
mid ocean ridges where upwelling magma creates new crust that moves away from the ridge in both directions in the middle of the ocean
rift zone also known as a divergent plate boundary
convection currents a current in a fluid that results from heat moving through solids like below the Earth's crust
hot spot when a lithospheric plate moves over a source of magma to form volcanoes
Popular Earth Science sets

 



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