Rocks and Minerals

Front

What are the two types of igneous rocks?

Back

Intrusive and extrusive.

Front

Which mineral can be scratched by calcite?

Back

Talc.

Front

What type of rock forms from magma or lava?

Back

Igneous.

Front

If a mineral can scratch another one, what does that mean?

Back

It is harder than the mineral.

Front

What causes igneous rocks to form?

Back

Cooling magma and lava.

Front

What is the definition of a mineral?

Back

A naturally occurring, inorganic solid with a definite chemical composition and crystalline structure.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks form from magma that cools slowly beneath the Earth's surface, while extrusive rocks form from lava that cools quickly on the surface.

Front

What is the Mohs scale?

Back

A scale that ranks minerals based on their hardness, from 1 (talc) to 10 (diamond).

Front

What is sedimentary rock?

Back

Rock formed from the accumulation and compaction of mineral and organic particles.

Front

What is metamorphic rock?

Back

Rock that has been changed from its original form due to heat, pressure, or chemically active fluids.