hot rocks exam word list
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| subduction | relates to convection currents, gravity and rock density
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| weathering | the various mechanical and chemical processes that cause exposed rock to decompose.
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| erosion | the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
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| sediments | mineral or organic matter deposited by water, air, or ice.
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| crust | the outer layer of the earth, thinnest and coolest layer
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| tectonic plates | The dozen or so plates that make up the surface of the Earth. Their motion is studied in the field of plate tectonics.
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| volcano | a mountain or hill, usually having a cuplike crater at the summit, formed around such a vent from the ash and lava expelled through it.
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| reverse fault | a fault in which the rock above the fault plane is displaced upward relative to the rock below the fault plane
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| normal fault | Normal Faults occur when tensional forces act in opposite directions and cause one slab of the rock to be displaced up and the other slab down
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| anticline | Folds which bend upwards
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| synclines | Folds which bend downwards
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| mantle | the portion of the earth, thick, between the crust and the core
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| inner core | he innermost part of a core, specif. a solid sphere in the middle of the fluid core such as the iron-nickel core of the Earth
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| earthquake | a series of vibrations induced in the earth's crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating.
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| subduction zone | the process by which collision of the earth's crustal plates results in one plate's being drawn down or overridden by another, localized along the juncture (subduction zone) of two plates.
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