We Will Rock You

Igneous rock is volcanic rock

It starts as liquid that’s in the earth

Sometimes it explodes and cools down fast

And forms obsidian that looks like glass



We will, we will rock you!

We will, we will rock you!


Metamorphic rock is a rock that’s changed

By the earth’s pressure and its heat

Live the caves’ limestone from an old sea

Turned to marble when the earth plates heaved


Sedimentary rock is compound rock

Made up of the other two

When they break down into smaller parts

Cemented together as if by glue