Front

Refers to a mineral’s ability to scratch another mineral or be scratched by another mineral.

Back

Hardness

Front

A mineral that is rare and can be cut and polished, giving it a beautiful appearance.

Back

Gem

Front

What is the hardest mineral?

Back

diamond

Front

The hardness of a mineral is measured by a scale known as...

Back

Moh's scale

Front

What was the purpose of the scratch test?

Back

to find the hardness of the mineral 

Front

A canyon is created by ________wearing down rock over thousands of years.

Back

a river

Front

What would smooth the surface of a rock quicker than lake water?

Back

rushing river

Front

The freezing and melting of ice breaks down rocks, demonstrating the ______.

Back

destructive process of weathering.

Front

A precious stone that has been cut or polished.

Back

gem

Front

A __________ is a natural, nonliving substance that makes up rocks.

Back

Mineral