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Rock cycle
NA
17
Science
7th Grade
11/05/2008

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Term
Rock
Definition
A relatively hard, naturally occurring mineral material.
Term
rock cycle
Definition
the process by which rocks are formed
Term
Igneous rock
Definition
It is a rock formed by the cooling of magma
Term
lava
Definition
A type of igneous rock that is formed when magma from a volcano hardens.
Term
intrusive
Definition
Of or relating to igneous rock that is forced while molten into cracks or between other layers of rock.
Term
Extrusive
Definition
Derived from magma poured out or ejected at the earth's surface. Used of igneous rocks.
Term
basaltic
Definition
A hard, dense, dark volcanic rock that flows
Term
granitic
Definition
A common, coarse-grained, light-colored, hard igneous rock
Term
metamorphic rock
Definition
Rock that was once one form of rock but has changed to another under the influence of heat, pressure
Term
foliated
Definition
Of or relating to rock that exhibits a layered structure.
Term
non-foliated
Definition
Term
sediment
Definition
Solid fragments of inorganic or organic material that come from the weathering of rock
Term
sedimentary rock
Definition
Sedimentary rocks are often deposited in layers, and frequently contain fossils.
Term
compaction
Definition
The process by which the porosity of a given form of sediment
Term
cementation
Definition
the heating of two substances in contact in order to effect some change in one of them
Term
magma
Definition
molten material beneath or within the earth's crust, from which igneous rock is formed
Term
detrital
Definition
rock in small particles or other material worn or broken away from a mass
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