Mineral Identification

Rocks are made from minerals.

• True

• False

Tags

NGSS.MS-PS1-1

________ is when a mineral breaks along a flat, smooth surface.

• Luster

• Streak

• Fracture

• Cleavage

________ is when a mineral breaks along an irregular surface.

• Cleavage

• Fracture

• Streak

• Luster

Luster is the color of the mineral's powder

• True

• False; Streak

• False; hardness

• False; luster

What test is used to examine the color a mineral leaves behind when rubbed on a hard surface?

• Powder test

• Mineral test

• Streak test

• Surface test

Mineral color and streak color are not always the same.

• True

• False

What is luster

• the way a mineral bends and changes shape

• the way a mineral reflects light from its surface

• a mineral's ability to be drawn into wires

Minerals that have a metallic luster will reflect light and can be either bright or dull.

• True

• False

What does Mohs' Scale measure?

• A mineral's mass

• A mineral's density

• A mineral's color

• A mineral's hardness, or texture.

The higher the number on Mohr's Scale, the softer the mineral.

• True

• False; harder