Humberto Gomez

Igneous, Sedimentary and Metamorphic Rock

The building blocks of the Cascade Waterfall on the UO Campus.

Rocks come in many shapes and sizes

And from many different places

Hot or cold

Wet or dry

Many have crystals inside

But how can you tell the difference

When rocks have similar characteristics?

An Igneous rock was once lava that cooled

Sedimentary rocks can form in water pools

Made from minerals and particles that stick together like glue

Metamorphic rocks used to be Igneous, Sedimentary and

Metamorphic too!

Temperature and pressure help rocks change shape

And chemical reactions causes their colors to change

With many rocks in the world some go unseen

Every rock is special and unique

Like you and me.

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