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.

Tags

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.5.10

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 Mineral?

• A nonliving solid material that has a definite chemical make up and is found in Earth's outermost layer.
• 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.

Another way to test hardness is...

• Mineral scale
• Moh's scale
• Streak scale

Tags

CCSS.RI.8.4

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.5.10

CCSS.RI.9-10.4

What is an igneous rock?

• Rock that forms when melted, or molten rock from deep below Earth's surface cools and hardens.
• A solid material made up of one or more minerals.
• Rock that forms when existing rocks are changed by heat, pressure, or chemicals beneath the Earth's surface.

Tags

CCSS.L.3.4D

CCSS.L.2.4E

CCSS.L.6.4C

CCSS.L.7.4C

CCSS.L.8.4C

What is metamorphic rock?

• Rock that forms when melted, or molten rock from deep below Earth's surface cools and hardens.
• A solid material made up of one or more minerals.
• Rock that forms when existing rocks are changed by heat, pressure, or chemicals beneath the Earth's surface.

What is a rock?

• Rock that forms when melted, or molten rock from deep below Earth's surface cools and hardens.
• A solid material made up of one or more minerals.
• Rock that forms when existing rocks are changed by heat, pressure, or chemicals beneath the Earth's surface.

Tags

CCSS.L.9-10.4C

CCSS.L.8.4C

CCSS.L.7.4C

CCSS.L.11-12.4C

CCSS.L.6.4C

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

• Sedimentary
• Igneous
• Metamorphic

Tags

CCSS.L.1.5A

CCSS.L.1.5B

CCSS.L.K.5A

This rock was molten lava that cooled quickly as it came out of a volcano. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic