Rocks

Front

What is a rock?

Back

A rock is a solid material made up of one or more minerals.

Front

What is a mineral?

Back

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and crystal structure.

Front

What does texture mean in relation to rocks?

Back

Texture refers to the feel, appearance, or consistency of a rock's surface.

Front

What is luster?

Back

Luster is the way light reflects off the surface of a mineral or rock.

Front

What is hardness in geology?

Back

Hardness is a measure of how resistant a mineral is to being scratched.

Front

Who is a geologist?

Back

A geologist is a scientist who studies rocks, minerals, and the processes that shape the Earth.

Front

What are the three main types of rocks?

Back

The three main types of rocks are igneous, sedimentary, and metamorphic.

Front

What is an igneous rock?

Back

Igneous rock is formed from the cooling and solidification of molten rock (magma or lava).

Front

What is a sedimentary rock?

Back

Sedimentary rock is formed from the accumulation and compaction of mineral and organic particles.

Front

What is a metamorphic rock?

Back

Metamorphic rock is formed when existing rocks are changed by heat, pressure, or chemical processes.