Rocks and Minerals

Which one of the following is NOT true for minerals?

• They have a specific, internal, crystalline structure.

• They can be a liquid, solid, or glass.

• Many have a specific, predictable chemical composition.

• They can be identified by characteristic physical properties.

It is the ability of a mineral to resist scratches.

• Luster

• Cleavage

• Crystal habit

• Hardness

The strong tendency of certain minerals to break along smooth, parallel planes is known as ________.

• Luster

• Cleavage

• fracture

• crystal habit

The color of mineral in powdered form.

• streak

• tenacity

• fracture

• cleavage

Which of the following rocks are formed from preexisting rocks exposed to extreme heat and pressure in the Earth’s interior?

• Igneous

• Metamorphic

• Sedimentary

• Plutonic

Which of the following rocks are formed by the lithification of sediments?

• sedimentary

• metamorphic

• intrusive

• extrusive

Smallest size of sediments.

• silt

• boulder

• clay

• sand

Creates non-foliated metamorphic rocks

• intrusive

• contact

• extrusive

• regional

Example of metamorphic rocks

• gneiss

• gypsum

• pumice

• granite

Formed from magma that cools slowly and rocks are coarse grained.

• Organic

• Clastic

• Extrusive

• Intrusive