Pg two Flashcards
1
Q
Mohs Hardness Scale
A
1 Talc 2 Gypsum 2.5 Fingernail 3 Calcite 3.5 Copper Penny 4 Flourite 5 Apatite 5.5 Glass 6 Feldsbar 6.5 Steel nail 7 Quartz 8 Topaz 9 Corundum 10 Diamond
2
Q
What is a rock?
A
A rock is a naturally occurring solid mixture of one or more minerals, or organic matter.
3
Q
How are rocks classified
A
How they are formed, their composition (what they’re made of), and texture
4
Q
Do rocks change over time?
A
Yes, rocks change over time through the rock cycle
