How Rocks Form

How Rocks Form

Key ConceptKey Concept

Geologists classify rocks into three major groups:

Igneous Rock Sedimentary Rock Metamorphic Rock

Geologists classify rocks into three major groups:

Igneous Rock Sedimentary Rock Metamorphic Rock

How Are Rocks Classified?

How Are Rocks Classified?

Igneous Rock- forms when magma or lava cools.

Sedimentary Rock- forms when particles are pressed and stuck together.

Metamorphic Rock- forms when heat and pressure change any kind of rock.

Igneous Rock- forms when magma or lava cools.

Sedimentary Rock- forms when particles are pressed and stuck together.

Metamorphic Rock- forms when heat and pressure change any kind of rock.