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| Earth has been affected by sudden short-lived, violent events |
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| current geologic processes the operate today also operated in the past |
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| earth sits motionless at center while planets and sun circle around it |
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| all planets circle the sun |
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| all matter and energy was initially packed into a single point |
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| process by which hydrogen atoms join together to form a helium atom |
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| carbon containing compounds that occur in living organisms |
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| inorganic; atoms are arranges in an orderly (crystallized structure) |
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| a solid;atoms are disorganized |
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| form when material becomes hot and tranforms into a liquid |
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| easily converted to gas from solid or liquid state |
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| body waves that can travel through solid and liquid |
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| body waves, can travel only through solid |
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| cool, rigid, outermost mantle and crust |
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| places where earths rotation axis intersects the earths surface |
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| resulted from circulation of liquid iron alloy in the earths outer core |
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| the circumfrance that passes over the sample location and paleopole |
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| distance between the sampling location and paleopole |
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| elongated submarine mountain ranges who peaks lie only 2-2.5km below sea level;parallel |
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| occur perpendicular to midocean ridges; narrow bands of vertical fractures |
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