Understanding Rocks

Front

Rocks are hard pieces of minerals that occur naturally in the world.

Back

What are rocks?

Front

Yes, rocks can be large like mountains or small like pebbles or grains of sand.

Back

Can rocks be large or small?

Front

Rocks are classified by properties such as color, hardness, size, texture, and luster.

Back

How are rocks classified?

Front

Rocks are made up of many different minerals.

Back

What are rocks made of?

Front

Igneous, sedimentary, and metamorphic rocks.

Back

Name three types of rocks.

Front

A type of rock formed from cooled and solidified magma or lava.

Back

What is an igneous rock?

Front

A type of rock formed from the accumulation and compaction of mineral and organic particles.

Back

What is a sedimentary rock?

Front

A type of rock that has been changed by heat, pressure, or chemical processes.

Back

What is a metamorphic rock?

Front

Geologists study rocks.

Back

Who studies rocks?

Front

Geologists also study the earth and how the planet changes over time.

Back

What else do geologists study?