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chapter 8
Term | Definition |
---|---|
Isostasy | Is the equilibrium between continental crust and the denser mantle below it |
subsidence | The downward vertical motion of Earth's surface |
Uplift | The upward vertical motion of Earth's surface |
Compression | When it squeezes stress |
Tension | Stress that pulls something apart |
Shear | Parallel forces acting in opposite directions |
Strain | A change in the shape of a rock caused by stress |
Ocean trenches | Are deep, underwater troughs created by one plate subducting under another plate at a convergent plate boundary |
Volcanic arc | A curved line of volcanoes that forms parallel to a plate boundary |
Transform faults | The tectonic plates slide horizontally past each other |
fault zone | An area of many fractured pieces of crust along a large fault |
folded mountains | Are made up of layers of rocks that are folded |
fault-block mountain | Are parallel ridges that form where blocks of crust move up or down along faults |
uplifted mountains | When large regions rise vertically with every little deformation |
basins | Areas of subisdence and regions with low elevation |
Plain | Is an extensive area of level or rolling |
Plateaus | Flat regions with high elevations |