Geologists use the Mohs scale to measure hardness. We think this quiz is most definitely a Mohs 10! Are you up to scratch or will you barely leave a dent?
The post Rocks rock – A quick quiz appeared first on Double Helix.
Geologists use the Mohs scale to measure hardness. We think this quiz is most definitely a Mohs 10! Are you up to scratch or will you barely leave a dent?
The post Rocks rock – A quick quiz appeared first on Double Helix.