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science
mr.boal
4
Science
8th Grade
12/10/2008

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Term
mid-ocean ridge
Definition
an undersea mountain chain where new ocean floor is produced;a divergent plate boundary.
Term
magma chamber
Definition
the pocket beneath a volcano where magma collects.
Term
organic rock
Definition
sedimentary rock that forms from remains of organisms deposited in thick layers.
Term
igneous rock
Definition
a type of rock that forms from the cooling of molten rock at or below the surface.
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