Mohs Hardness Scale

Front

What is the Mohs Hardness Scale?

Back

A scale that ranks minerals based on their ability to scratch one another, from 1 (softest) to 10 (hardest).

Front

What mineral is ranked #1 on the Mohs Hardness Scale?

Back

Talc.

Front

What mineral is ranked #10 on the Mohs Hardness Scale?

Back

Diamond.

Front

If a mineral can be scratched by talc, what can you say about its hardness?

Back

Its hardness rating must be 1 or lower.

Front

True or False: All rocks contain at least one mineral.

Back

True.

Tags

NGSS.MS-PS1-1

Front

What is the hardness rating of quartz?

Back

7 on the Mohs Hardness Scale.

Front

Why does quartz scratch glass more easily than feldspar?

Back

Because quartz is harder than feldspar.

Front

What is the hardness rating of a mineral that can scratch calcite but is scratched by quartz?

Back

It has a hardness rating between 3 (calcite) and 7 (quartz).

Front

What does a higher number on the Mohs Hardness Scale indicate?

Back

A mineral is harder and can scratch minerals with lower numbers.

Front

What is the hardness rating of fluorite?

Back

4 on the Mohs Hardness Scale.