Rocks and Minerals

A solid substance that occurs naturally in rocks or in the ground is a...

• rock.
• mineral.

A solid substance made of one or more minerals is a...

• rock.
• mineral.

Which is NOT a physical property scientists use to identify and classify minerals?

• luster
• shape of crystals
• size
• color

Which is NOT a physical property scientists use to identify and classify minerals?

• hardness
• streak
• magnetism
• texture

The Mohs scale measures...

• color.
• luster.
• hardness.
• streak.

A mineral that registers a "1" on the Mohs scale would be very...

• hard.
• soft.

A mineral that registers a "10" on the Mohs scale would be very...

• hard.
• soft.

How light reflects off a mineral (shiny/dull/metallic) is its...

• luster.
• hardness.
• streak.

The color of a mineral's powder that is left when the mineral is rubbed against a ceramic tile is called its...

• luster.
• hardness.
• streak.

This type of rock is formed when magma cools:

• igneous
• sedimentary
• metamorphic