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chapter 8 vocab
Term | Definition |
---|---|
isostasy | is the equlilbrium between continental crust and the denser mantle below it |
subsidence | the downward vertical motion of earths surface |
uplift | the upward vertical motion of earths 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 | are deep, underwater troughs created by and oceanic 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 | where blocks of crust slide horizontally past each other |
fault zone | an area of many fractured pieces of crust along a large fault |
folded mountain | are made of layers of rocks that are folded |
fault-block mountains | are parallel ridges that form where blocks of crust move up or down along faults |
plains | is an extensive area of level or rolling land |
basins | areas of subsidence and regions with low elevation |
plateaus | flat regions with high elevations |