7.8 Minerals & Rocks Quiz Practice

Cubic zirconia is a synthetic stone that looks like diamond, but it's not a mineral because

• it is too easy to break
• you can't do a streak test with it
• it is made by people
• it is transparent

Mineral have a crystal structure because of

• the way they reflect light

• their color

• the arrangement of their atoms

• their grains

____ describes a mineral that break rough, jagged edges.

• Cleavage
• Fracture
• Luster
• streak

Because selenite breaks along smooth flat planes, it has

• cleavage
• fracture
• luster
• hardness

___ describes the way light is reflected from a mineral's surface.

• Fracture
• Luster
• Streak
• Crystal structure

The color of a mineral's powder is called its

• cleavage
• luster
• streak
• color

Minerals can crystalize from magma and

• oxygen
• water

• dissolved sediment
• lava

Salt is the mineral

• mica
• halite
• emerald
• calcite

In which process do atoms combine in an orderly arrangement to make minerals?

• foliation
• compaction
• lithification
• crystallization

Coal is NOT a mineral because

• it is made from the remains of a living thing

• it is from the ocean
• there are too many different kinds
• it is not solid