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Chapter - 8 - Vocab
Earth Dynamics
Term | Definition |
---|---|
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 |