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Mr. Biando's Lab

Mr. Biando's Lab - Plate Tectonic Theory

TermDefinition
Plate Tectonic The theory that explains how large pieces of the Earth's outermost layer, called tectonic plates, move and change shape.
Convergent Boundary The boundary formed by the collision of two lithospheric plates.
Divergent Boundary The boundary between two tectonic plates that are moving away from each other.
Transform Boundary The boundary between tectonic plates that are sliding past each other horizontally.
Continental-Oceanic Collision When a plate with oceanic crust collides with a plate of continental crust, the denser oceanic crust sinks into the asthenosphere.
Subduction Zone The area where the oceanic crust sinks down into the asthenosphere and melts.
Oceanic-Oceanic Collision When two plates of oceanic crust collide with one sinking below the other into the aesthenosphere.
Continental-continental Collision When two tectonic plates with continental crust collide, they buckle and thicken, which pushes the crusts upward forming mountain chains.
Mid-Ocean Ridge An example of an underwater divergent boundary.
Fault An example of a transform boundary.
Ridge push The movement of the lithosphere sliding downhill caused by the pulling force of gravity.
Convection Hot rock deep within the Earth causes the oceanic lithosphere to move sideways away from the mid-ocean ridge.
Slab pull When the denser, heavier oceanic lithosphere sinks and pulls the rest of the tectonic plate with it.
Continental drift A hypothesis that earths continents move on earths surface
rift are deep valleys at the center of a mid ocean ridge.
subduction boundary boundary between the plates
deep sea trench is a long deep trench. deepest part of the ocean floor.
collision boundary boundary that forms when two continents collide and are welded intoa single,larger continent
mantle convection heat from earths inner and outer cores is transferred throughtha mantle by a process.
pangaea giant landmass
craton core of each continent is an expanse of ancient rock.
terrane large block of lithospheric plate that has been moved, often over a distance of 1000 of kilometers, and attached to the edge of a continent.
Created by: dbiando