3rd Grade MYF Spiral Review

Front

What is Luster?

Back

Luster is the way a mineral shines or reflects light.

Front

What property of a mineral is tested by scratching it with another object?

Back

Hardness is the property tested by scratching.

Front

What does a smooth and round rock indicate about its history?

Back

It suggests that the rock has been in the ocean for a long time, where it was worn down by water.

Front

What is the hardness scale used for?

Back

The hardness scale is used to determine how hard a mineral is by seeing what it can scratch.

Front

What mineral can scratch Apatite but can be scratched by Quartz?

Back

The mineral is Orthoclase.

Front

What is the definition of Cleavage in minerals?

Back

Cleavage is the way a mineral breaks along certain lines of weakness.

Front

What is the difference between Hardness and Luster?

Back

Hardness measures how easily a mineral can be scratched, while Luster describes how it reflects light.

Front

What does it mean if a mineral has a metallic sheen?

Back

It means the mineral has a high luster, reflecting light like metal.

Front

What is the term for the color of the powder left by a mineral when it is scratched on a surface?

Back

Streak is the term for the color of the powder left by a mineral.

Front

What is an example of a mineral with a high hardness?

Back

Diamond is an example of a mineral with very high hardness.