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Minerals Review
6th grade
Question | Answer |
---|---|
List the five main characteristics of a mineral. | A solid, naturally occurring, inorganic, crystalline structure, with a definite chemical composition. |
What is Moh's Hardness Scale | a scale that rates minerals from 1 - 10 depending on the mineral's hardness. |
What is the HARDEST known mineral according to Moh's Hardness Scale? | diamond |
What is the SOFTEST known mineral according to Moh's Hardness Scale? | talc |
Explain how you test for a mineral's streak? | you observe streak by rubbing a mineral against a piece of tile called a streak plate |
streak | the color of a mineral's powder |
luster | how a mineral reflects light from its surface |
cleavage | when a mineral breaks/splits along flat surfaces |
fracture | when minerals break unevenly along rough or curved surfaces. |
Why are minerals always solids? | it is always a solid because it has a definite volume and shape. |
What is mining? | when minerals are taken from the ground. |