Review for Rocks and Minerals Summative

Review for Rocks and Minerals Summative

​

Minerals

• Minerals are not man made and are inorganic. This means they do not contain plants and animals.

• Minerals have properties that help you identify them.

• Some properties are: hardness, streak, luster, cleavage, flexibility, color (least important)

Multiple Choice

A mineral is an inorganic substance and is found in the earth. A mineral is not man made.

• True

• False

Luster

• Glassy, Shinny, Metallic- These words mean it has a luster

• Dull, non-metallic, -These words mean it doesn't have a luster.

• 
  

Multiple Choice

If you are looking at a chart and it says the mineral you are looking at is non-metallic. Does your mineral have a luster?

• yes

• no

Cleavage

• When a mineral breaks into smooth pieces or flat surfaces

• This can be tested by simply breaking the mineral.

Hardness

• The Moh's hardness scale helps you determine the hardness of the mineral.

• It goes from 1 to 10. 1 is the softest and 10 is the hardest (diamond)

• You can test hardness by using a penny or your fingernail.

Multiple Choice

Calcite has the hardness of 3 and feldspar has a hardness of 6. Which statement is true?

• Calcite can scratch feldspar.

• Feldspar can scratch calcite.

Streak

• A streak is a minerals powder that it leaves when rubbed on a porcelain plate.

• The minerals streak is not always the same as its outside color.

• The softer the mineral, the better streak it will leave. If the mineral is harder, you need to push down much more to see the streak.

Multiple Choice

Mohs Hardness Scale:

Talc -2

Quartz-7

Diamond-10

Which mineral will be able to make an easier streak?

• Diamond

• Quartz

• Talc

Rocks

• Rocks are pieces of minerals, other rocks, fossils, seashells, plants and animals that are formed 3 different ways.

• There are 3 different types of rocks: igneous, metamorphic and sedimentary.

• Rocks are formed by the rock cycle.

Multiple Choice

Weathering is when all 3 types of rocks are....

• compacted and cemented together

• broken down by wind, water and other elements

• deposited into the water

• melted

Multiple Choice

A metamorphic rock:

• is formed by cooled magma

• is formed by cementation and compaction

• is formed by heat and pressure

Multiple Choice

An igneous rock is

• is formed by the cooling of magma

• is formed by cementation and compaction of sediment

• if formed by heat and pressure

Multiple Choice

A sedimentary rock is formed by

• the cooling of magma

• the cementation and compaction of sediment

• heat and pressure