Science Chapter 3 Lesson 2

Front

What is the definition of hardness in minerals?

Back

Hardness is a measure of a mineral's ability to resist being scratched.

Front

What does luster refer to in minerals?

Back

Luster is the way in which a mineral's surface reflects or absorbs light.

Front

What is cleavage in mineralogy?

Back

Cleavage is the tendency of a mineral to break along flat, even surfaces.

Front

What is fracture in mineralogy?

Back

Fracture is the way a mineral breaks when it does not break along cleavage planes.

Front

What is a streak test?

Back

A streak test is used to determine the color of a mineral in its powdered form.

Front

What color streak do most nonmetallic minerals produce?

Back

Most nonmetallic minerals usually produce a white streak.

Front

Why are diamonds used in drill bits?

Back

Diamonds are used in drill bits because of their hardness.

Front

What is the Mohs scale?

Back

The Mohs scale is a scale that ranks minerals based on their hardness from 1 (softest) to 10 (hardest).

Front

What is an example of a mineral with high hardness?

Back

An example of a mineral with high hardness is diamond.

Front

What is an example of a mineral with low hardness?

Back

An example of a mineral with low hardness is talc.