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plate boundaries J.W

TermDefinition
lithosphere the rigid outer part of the earth, consisting of the crust and upper mantle.
asthenosphere the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
continental crust the relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.
oceanic crust Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate. The crust overlies the solidified and uppermost layer of the mantle. The crust and the solid mantle layer together constitute oceanic lithosphere.
transform fault boundary is a type of fault whose relative motion is predominantly horizontal, in either a sinistal (left lateral) or dextral (right lateral) direction.
oceanic-oceanic convergent boundary The denser plate, made of oceanic crust, is subducted underneath the less dense plate. and from trench and a volcano island.
trench a long, narrow ditch.
volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
rift valley A rift valley is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault.
mid-ocean ridge is an underwater mountain range, formed by plate tectonics.
Created by: jwhite14
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