Naturally Speaking
The softest mineral on the Mohs hardness scale.
What is talc
Molten rock cools and hardens.
What are igneous rocks
These rocks are produced when pieces of other rocks, plant and animal matter, or dissolved minerals collect to form rock layers.
What are sedimentary rocks
Rocks form as a result of exposure to molten material and faulting and folding inside the earth
What is metamorphic
The science that studies the physical structure of the Earth (or planets), its history, and the processes that act on them?
What is Geology
A naturally occurring, inorganic, solid substance with a definite chemical composition and a crystalline structure.
What is a mineral
Igneous rocks that form when lava cools on Earth's surface.
What is extrusive
A type of sedimentary rock formed from the remains of decomposed plants.
What is Coal
Marble is a metamorphic rock formed from this kind of rock.
What is limestone
This cycle describes the continuous process by which rocks change from one type to another
What is the Rock Cycle
Minerals can be classified based on their luster. Which describes the luster of a mineral that shines like a mirror?
What is glassy
Igneous rocks that form when lava cools under the crust inside Earth, rather than on the surface.
What is intrusive
The process that breaks down rocks into smaller pieces.
What is weathering
Exposure to igneous molten material is known as __________ metamorphism
What is contact metamorphism
A crack in the earth's crust through which molten rock can ooze onto Earth's surface
What is a fissure
The most abundant mineral in the Earth's crust.
What is feldspar
Rocks, such as basalt, that are high in dark-colored minerals and composed mainly of magnesium and iron.
What is mafic
In the rock cycle, sediments are placed into a new location to eventually become new sedimentary rock.
What is deposition
Metamorphic Rocks can be classified into two groups
What is foliated and nonfoliated
Central magma vent of an active volcano.
What is a volcanic pipe
This mineral is the most abundant on earth
What is quartz
Rocks, such as granite, that are high in light-colored minerals, which also include feldspar and quartz.
What is felsic
A type of rock that consists of smaller rocks cemented together randomly
What is a conglomerate rock
When tectonic activity such as crustal plates colliding or pulling apart, results in faulting and folding.
What is regional metamorphism
Tectonic plates float on top of this plastic-like layer of the mantle.
What is the asthenosphere