18 terms

Rock Cycle

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Igneous rock
a type of rock that forms from the cooling of molten rock at or below the
surface
Extrusive rock
igneous rock that forms from lava on Earth's surface
Intrusive rock
igneous rock that forms when magma hardens beneath Earth's surface
Sedimentary rock
a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.
Sediment
small, solid pieces of material that come from rocks or organisms.
Erosion
the destructive process in which water or wind loosens and carries away fragments of rock.
Deposition
particles deposited as loosely packed sediment
Compaction
particles squeezed together under great pressure
Cementation
particles glued together as mineral solutions harden
Clastic rock
form from an accumulations of little pieces of broken up rock which have piled up by compaction and cementation over long periods of time (sedimentary)
Chemical rock
form when standing water evaporates, leaving dissolved minerals behind over long periods of time (sedimentary)
Organic
form from the accumulation of plant or animal debris which have piled up by compaction and cementation over long periods of time (sedimentary)
Metamorphic rock
a type of rock that forms from an existing rock that is changed by heat, pressure or chemical reaction
Foliated rock
term used to describe metamorphic rocks that have grains arranged in parallel layers or bands (metamorphic)
Non-foliated rock
term used to describe metamorphic rocks that the mineral grains are arranged randomly
Rock Cycle
a series of processes on the surface and inside Earth that slowly changes rocks from one kind to another.
Magma
molten rock below the Earth's surface
Lava
molten rock on the Earth's surface