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14 Cards in this Set
- Front
- Back
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earth's crust
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earth's outermost layer of rock
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sediment
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small solid fragments of rock and other materials that are carried and deposited by wind, water, or ice. Examples would be sand, mud, or gravel.
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sedimentary rock
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rock formed when chemical reactions cement sediments together, hardening them
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igneous rock
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rock that forms from molten rock
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metamorphic rock
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igenous or sedimentary rock that has been changed into a new kind of rock as a result of great pressure & tempature.
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plastic rock
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rock that behaves like something between a liquid and a solid
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earthquake
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vibration of the earth that results either from volcanic activity or rock masses suddenly moving along a fault
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fault
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the boundary between two sections of rock that can move relative to one another
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focus
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the point where an earthquake begins
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epicenter
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the point on the surface of the earth directly above an earthquake's focus
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earth's five distinct sections
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hydrosphere, atmosphere, crust, mantle, core
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Of the five sections, which can we observe directly
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atmosphere, hydrosphere, crust
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What two regions of earth does the Moho discontinuity seperate?
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crust & mantle
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Gutenberg discontinuity.. what does it seperate?
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Mantle & core
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