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Unit 3 lessons 3 & 4

Lithosphere the solid, outer layer of Earth that consits of the crust and the rigid upper part of the mantle
Asthenosphere the soft layer of the mantle on which the tectonic plates moves
Tectonic Plate a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
Deformation the bending, tilting, and breaking of Earth's crust; the change in the shape of rock in response to stress
Shear Stress when two tectonic plates move past one another and the material twists and distorts
Compression whe two tectonic plates push against one another causing the rock to fold and shorten
Tension when two tectonic plates move away from one another the rock starts to stretch
Convergent Boundary the boundary between tectonic plates that are colliding
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
Earthquake a movement or trembiling of the ground that is caused by a sudden release of energy when rocks along a fault move
Focus the location within Earth along a fault at which the first motion of an earthquake occurs
Epicenter the point on Earth's surface directly above an earthquake's starting point, or focus
Tectonic Plate Boundary the edge between two or more plates classified as divergent, convergent, or transform by the movement taking place between the plates
Fault a break in a body of rock along which one block moves relative to another
Elastic Rebound the sudden return of elastically deformed rock to its undeformed shape
Created by: jg.18589
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