Minerals
This term is used to describe items that come from living things.
Organic
This word "igneous" comes from the Latin "ignis" which mean this.
Fire
Small particles of rock, sand, pebbles, leaves and shells are known by this name.
Sediment
Any type of rock can be morphed into metamorphic rock as long as it's given enough of this.
Heat and Pressure
This process allows solid rock to become liquid once again.
Melting
This type of test, usually done on a ceramic plate, involves finding the color of a mineral's powder.
Streak test
Rocks that cool within Earth's crust are referred to by this category.
Intrusive
This term is used to describe the squeezing of particle layers together from the weight of the ground above them.
Compaction
Metamorphic rocks that have no sort of grain arrangement are referred to by this term.
Nonfoliated
Extrusive Rocks come from the cooling of this liquid rock.
Lava
The scratch test can allow geologists to determine the hardness of a mineral or where it falls on this scale.
Mohs Hardness Scale
Rocks that cool quickly typically have this type of grain.
Fine grains
This type of organic sedimentary rock is burned as fuel...causing much pollution in the process.
Coal
The sedimentary rock shale can be exposed to heat and pressure, which can morph it into this type of rock.
Slate
This process causes some sedimentary rocks to have visible layers.
Deposition
Minerals that break apart unevenly are said to have a fracture. Minerals that break apart cleanly along a flat plane are said to have this property.
Cleavage
Rocks like granite have their colors determined by these.
Minerals
Rocks formed from the crystallization of minerals dissolved in water are known by this name.
Chemical rocks
The leaning Tower of Pisa was made from this type of even-grained metamorphic rock.
Marble
Weathering and Erosion are driven by these two root factors
Gravity and the Sun
One of the most common types of crystal structures, this six sided pattern is exhibited by quartz.
Hexagonal
This type of glassy igneous rock has been used for centuries for daggers and blades because of its tendency to chip off sharp edges.
Obsidian
Because of the calcite in this type of rock, statues made of this are very vulnerable to acid rain.
Limestone
This is the term given to the parent rock that will become metamorphic.
Protolith
Around this many rock-forming minerals make up most of the rocks in Earth's crust.
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