Front

What is a rock?

Back

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

Front

What are the three main types of rocks?

Back

Igneous, sedimentary, and metamorphic.

Front

How do igneous rocks form?

Back

Igneous rocks form when melted rock cools and hardens.

Front

What is a mineral?

Back

A mineral is a solid, nonliving material found in nature.

Front

What is the rock cycle?

Back

The rock cycle is the process by which rocks change from one type to another over time.

Front

What type of rock is formed by heat and pressure?

Back

Metamorphic rock.

Front

What type of rock is formed from cooled lava?

Back

Igneous rock.

Front

What is sedimentary rock made of?

Back

Sedimentary rock is made of pieces of rock and other materials that have been squeezed together.

Front

What is obsidian?

Back

Obsidian is a type of igneous rock that forms from quickly cooled lava.

Front

What is granite?

Back

Granite is a type of igneous rock that forms from slowly cooled magma.