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Chapter - 8 - Vocab

Earth Dynamics

TermDefinition
isostasy Equilibrium between crust and mantle layers.
Subsidence vertical downward motion of Earth's service
Uplift upwards vertical motion of Earth's service
Compression Squeezing stress
Tension Stress that puls something apart
Shear Parallel forces acting in opposite directions
Strain change in shape of rock induced by stress
Ocean Trenches deep underwater troughs created by one plate subducting under each other.
Volcanic Arc curved line of volcanoes, forms parallel to plate boundaries.
Transform Fault tectonic plates slide horizontally from each other.
Fault Zone pieces of fractured crust over a large fault
Folded Mountains Large layers of rock whichh have folded over each other.
Fault-block Mountains Parallel ridges form where blocks move up and down along faults
Uplifted mountains large regions rise vertically, very little deformation
Plains extensive area of rolling/level land
Basins subsidence and low elevation
plateaus flate regions with high elevation
Created by: Zurie H
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