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Chapter 8 Vocabulary
Term | Definition |
---|---|
isostasy | 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 | squeezing stress |
tension | stress that pulls something apart |
shear | parallel forces acting in opposite directions |
strain | a change in the shape of rock caused by stress |
ocean trench | deep, underwater troughs created by one plate subducting other another plate at a convergent plate boundary |
volcanic arc | a curved line of volcanoes that form parallel to a plate boundary |
transform fault | where tectonic plates slide horizontally past each other |
fault zone | an area of many fractured pieces of crust along a large vault |
folded mountain | made of layers of rocks that are folded |
fault-block mountain | parallel ridges that form where blocks of crust move up or down along faults |
uplifted mountain | when large regions rise vertically with very little deformation |
plains | an extensive area of level of rolling land |
basin | areas of subsidence and regions with low elevation |
plateau | flat regions with high elevations |