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Plate Tectonics

TermDefinition
Plate Tectonics Theory that describes and explains the way that the continents separated into today's land masses from one large land mass (Pangea) and how they continue to move today
Convergent Boundary Locations where lithospheric plates are moving towards one another; can produce earthquakes, volcanic activity and mountain building
Plate Pieces of the crust and upper mantle that float and move around on the asthenosphere
Divergent Boundary Locations where plates are moving away from one another; occurs above rising convection currents and causes rifts, volcanoes, and mid-ocean ridges
Subduction Process in which one edge of the crustal plate is forced below the edge of another and sinks into the mantle
Geology The Scientific study of the origin, history, structure, and composition of the Earth
Mountain Building Formed through volcanic activity, by erosion or uplift of the continental crust when plates collide
Sea Floor Spreading Process in which the ocean floor is extended when two plates move apart
Transform Boundary Locations where two plates slide past one another. Sudden shifts result in major geological events, such as earthquakes and the release of stored energy
Oceanic Plate Part of the crust that lies beneath the oceans
Continental Plate Part of the crust that makes up the continents
Tectonic Plates Huge pieces of the lithosphere that slowly move on the asthenosphere, and consist of the crust and the rigid, uppermost part of the mantle
Ocean Basin Movement of the plates that create dense oceanic crust that sinks lower in the asthenosphere than the less dense continental crust
Earthquake Major geological event that occurs when plates shift at a transform boundary
Volcanic Eruptions Major geological event that occurs when a dense plate subducts below a less dense plate as they converge
Created by: mrshintze
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