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science chapter 5

crust the thin and solid outermost layer of Earth above the mantle
mantle the layer of rock between the Earth's crust and core
core the central part of Earth below the mantle
tectonic plate a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
Continental drift the hypothesis that a single large landmass broke up into smaller landmasses to form the continents, which then drifted to their present locations; the movement of continents
Sea-floor spreading the process by which new oceanic lithosphere (sea floor) forms as magma rises to Earth's surface and solidifies at a mid-ocean ridge
Plate tectonics the theory that explains how large pieces of Earth's outermost layer, called tectonic plates, move and change shape
convergent boundary the boundary between tectonic plates that are colliding
divergent boundary the boundary between two tectonic plates that are moving away from each other
transform boundary the boundary between tectonic plates that are sliding past each other horizontally
compression stress that occurs when forces act to squeeze an object
Tension stress that occurs when forces act to stretch an object
folding the bending of rock layers due to stress
fault a break in a body of rock along which one block slides relative to another
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
Created by: Phoenix8181



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