Rocks and Minerals

What is Hardness?

• The tendency of a mineral to split easily along flat surfaces.

• A measure of how easily a mineral can be scratched.

• The way a mineral shines, or reflects light.

What is Luster?

• The color of a mineral when it is ground into a powder.
• A measure of how easily a mineral can be scratched.
• The way a mineral shines, or reflects light.

What is a Streak?

• The tendency on a mineral to split easily along flat surfaces.
• A measure of how easily a mineral can be scratched.
• The color of a mineral when it is ground into a powder.

This rock was found near the mouth of a volcano. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic

In order for a metamorphic rock to form, _______ is needed.

• Pressure
• Heat 
• Heat and Pressure
• Weathering

What are 3 properties that are used to identify minerals?

• luster, color and sound
• smell, color and hardness
• luster, color and hardness
• luster, smell and hardness

What are Igneous Rocks that form as magma cools underground called

• extrusive rocks
• intrusive rocks 

Metamorphism is caused by intense _____ & _____.

• foliation & nonfoliation
• texture & composition
• cementation & compaction
• temperature & pressure 

• Gold
• Hematite
• Pyrite
• Galena

The five characteristics that all minerals share are:

• Definite Chemical Composition, Color, Density, Igneous, and Solid
• Definite Chemical Composition,  Crystal Structure, Inorganic, Naturally Occurring, and Solid
• Cleavage, Faces, Hardness, Metamorphic, and Streak
• Cleavage, Crystal Structure, Density, Igneous, and Solid