Rocks/Minerals/Geo Time Review

Which of the following is NOT a characteristic that all minerals share?

• streak color

• solid

• Crystalline Structure

• inorganic

The way a mineral reflects light is called its luster

• True

• False

state of matter is a way that minerals can be identified

• True

• False

An unidentified mineral scratches topaz but not diamond. According to the Mohs scale, what could be the unidentified mineral?

• diamond

• fluorite

• corundum

• talc

What are you looking for when you test for streak?

• what color powder they left behind

• How they break

• How light reflects off of them

• How they smell

Rocks are classified as sedimentary, metamorphic, or igneous on the basis of the

• age of the rocks

• way the rocks were formed

• types of fossils the rocks contain

• number of minerals found in the rocks

What would be needed to change sedimentary rock to form a metamorphic rock?

• Melting

• weathering and erosion

• cooling

• heat and pressure

What type of rock has very small grains of sand in different layers?

• Igneous

• Sedimentary

• Metamorphic

Igneous rocks are usually classified as

• Intrusive or Extrusive

• Clastic, Chemical, or Organic

• Foliated or Non-foliated

Metamorphic rocks are usually classified as

• Intrusive or Extrusive

• Clastic, Chemical, or Organic

• Foliated or Non-foliated