12 terms

Rocks and Rock Cycle Vocabulary

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mineral
a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition
rock
A naturally occurring solid mixture of one or more minerals or organic matter
Magma
Molten rock beneath the earth's surface
Lava
Magma that reaches Earth's surface
intrusive igneous rock
rock formed from the cooling and solidification of magma beneath Earth's surface
extrusive igneous rock
rock that forms from the cooling and solidification of lava at Earth's surface
sedimentary rock
a rock that forms from compressed or cemented layers of sediment
metamorphic rock
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
igneous rock
a type of rock that forms from the cooling of molten rock at or below the surface
rock cycle
A series of processes on the surface and inside Earth that slowly changes rocks from one kind to another
Weathering
The chemical and physical processes that break down rock at Earth's surface.
Metamorphism
the process in which one type of rock changes into metamorphic rock because of chemical processes or changes in temperature and pressure
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