Rocks and Minerals by Dr. D.

Minerals are always _________ and ____________.

• naturally occurring, synthetically produced

• liquid , organic

• naturally occurring, inorganic

• solid, synthetically produced

Notice how these rocks / minerals are broken randomly in jagged forms. This is known as...

• luster

• cleavage

• fracture

• messy

Notice how this mineral breaks in flat pieces, almost like it was cut intentionally. This is known as

• luster

• fracture

• cleavage

• fortunate

minerals are always...

• solids

• liquids

• gasses

• plasma

Silver and gold have a special kind of shiny surface we call

• pearly luster

• metallic luster

• waxy luster

• dull streak

Igneous Rocks form when ________________

• Rocks of various kinds are exposed to heat and pressure

• Rocks melt into magma

• Magma or lava cools and crystalizes

• Sediments are compressed and cemented

The process of cementation could create...

• an intrusive igneous rock

• a clastic sedimentary rock

• a foliated metamorphic rock

• an extrusive igneous rock

Foliation is banding (like strips) caused by heat and pressure. Therefore a foliated rock is most likely

• igneous

• metamorphic

• sedimentary

Tags

NGSS.MS-ESS2-1

a measure of how easy a mineral can be scratched or how well it scratches something else (like glass) is called

• hardness

• luster

• streak

• magnetism

the color of a mineral in its powdered for is called its

• streak

• luster

• hardness

• chemical composition