Rocks and Minerals

Henry found a special object while he was hiking with his dad. What 4 simple test can henry do to determine if it is a rock or mineral

• color, texture, scratch it, throw it

• color, texture, luster, hardness

• color and luster

• throw it and hardness

Leo thought he had found calcite. What scale can Leo use to determine if he is correct.

• Mohs Scale of Hardness

• A scale

• Scratched by copper penny

• hardness of 3

What are a few questions to can ask to tell the difference between rocks and minerals?

• Is it hard? Is it different? does it shine?

• Is it luster? Does it break? Doe it shine?

• Is in colorful? Is it alive? is it rock and cystal?

• Is it all one color? Does it have different layers? Is it one big crystal?

Which important fact is NOT a description of a mineral?

• Made up of one type of mineral

• Usually one color

• Usually have many colors or layers

• Can be valuable

Tags

NGSS.2-PS1-1

Which is NOT an important fact of a rock?

• Can be made up of a crystal

• May have crystal in parts of it (Geode)

• Cab be as small as a grain of sand

• Can be as big as a mountain (Example: Stone Mountain)

Check all that describes a Diamond

• glassy luster

• scratches all others

• it is a rock

• hardness of 10

Check all that applies to describe pyrite.

• Is a mineral

• metallic

• luster

• it is a rock

Scientist DO NOT classify rocks and minerals by their?

• hardness

• size or weight

• luster

• color

Each mineral on the Mohs Hardness scale is given a number based on what?

• simple scratch test

• compare with a diamond

• Test the texture

• Test the color

How is the Mohs Hardness Scale organized

• 10 to 1. 10 is the softest and 1 is the hardest

• texture

• 1 to 10. 1 is the softest and 10 is the hardest

• color