texture
The look and feel of a rock's surface, determined by size, shape, and pattern of a rock's grain.
igneous rock
A type of rock that forms from the cooling of molten rock at or below the 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.
metamorphic rock
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reaction.
extrusive rock
igneous rock that froms from lava on Earth surface.
intrusive rock
Igneous rock that forms when magma hardens beneath Earth's surface.
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
The process by which sediment settles out of the water or wind that is carrying it.
compaction
The process by which sediments ae pressed together under their own weight.
cementation
The process by which dissolved minerals crystallize and glue particles of sediment together into one mass.
clastic sedimentary rock
Sedimentary rock that forms when rock fragments are squeezed together under high pressure.
organic sedimetnary rock
Sedimentary rock that forms from remains of organisms deposited in thick layers.
chemical sedimentary rock
Sedimentary rock that forns when minerals crystallize from a solution.
foliated
Term used to describe metamorphic rocks that have grains arranged in parallel layers or bands.
weathering
water, wind, ice and changes in temperature break down rock
rock cycle
the series of processes in which rock changes from one type to another
composition
the minerals or organic matter a rock contains determine the composition or make up of a rock