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c7s1-4 science
Term | Definition |
---|---|
normal fault | Usually occur when tectonic forces cause tension that pulls rocks apart. |
Reverse Fault | Occurs when tectonic forces causes compression that pushes rock together. |
Strike-slip fault | Forms when opposing forces cause rock to break and move horizontally. |
folded mountain | Forms when rock rock layers are squeezed together and pushed upward. |
volcanic mountains | located at convergent boundaries where oceanic crust sinks into the athenosphere at subduction zone |
rift zone | is a set of deep cracks that forms between two tectonic plates that are pulling away from each other |
uplift | The rising of regions of the Earth's crust to higher elevations |
subsidence | The sinking of regions of the Earth's crust to lower elevations |
fault | a break in a body of rock along which one block slides relative to another |
folding | the bending of rock layers due to stress |
compression | stress that occurs when forces act to squeeze an object |
tension | stress that occurs when forces act to stretch an object |
transform boundary | the boundary between tectonic plates that are sliding past each other horizontally |
divergent boundary | the boundary between two tectonic plates that are moving away from each other |
convergent boundary | the boundary formed by the collision of two lithospheric plates |
tectonic plates | a block of lithosphere that consists of the crust and the ridge, outermost part of the mantle |
mesosphere | the strong, lower part of the mantle between the asthenosphere and the outer core |
lithosphere | the solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle |
anthenosphere | the soft layer of the mantle on which the tectonic plates move |
core | the central part of the Earth below the mantle |
mantle | the layer of rock between the Earth's crust and core |
crust | the thin and solid outermost layer of the Earth above the mantle |
continental drift | the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations |
sea floor spread | the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies |
plate tectonic | the theory that explains how large pieces of the Earth's outermost layer, called tectonic plates, move and change shape |