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3.3 & 3.4

TermDefinition
Lithosphere The solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle.
Asthensosphere The soft layer of the mantle on which the tectonic plates move.
Tectonic plate A block of lithosphere that consists of the crust and the rigid, outermost part of the mantle.
Deformation The bending, titling, and breaking of Earth's crust; the change in the shape of rock in response to stress.
Shear Stress Causes material to twist or become distorted.
Compression It is a stress that squeezes or shortens material.
Tension Is a stress that lengthens a material or pulls a material apart.
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 trembling 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: kt.18217
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