Unit 3A Review: Composition of the Earth

A rock which contains a useful mineral is call a/an

• gem
• quarry
• ore
• alloy

The color of a mineral in powder form is called the mineral's 

• hardness
• specific gravity
• luster
• streak

How light reflects off of a mineral is called the mineral's 

• luster
• streak
• cleavage
• fracture

Why is coal not a mineral?

• It's not a solid
• It is man-made
• It is not inorganic
• It is made of carbon

By definition, a mineral has which of the following characteristic(s)?

• definite chemical composition
• crystal structure
• naturally occuring
• all of the above

How do you test the hardness of a mineral? 

• Throw it against a wall
• Step on it
• Scratch Test
• Kick it until it breaks

A mineral's resistance to being scratched is called?

• streak
• luster
• hardness
• heft

Large crystals are going to form

• when lava erupts from a volcano
• when a shallow sea evaporates
• when magma underground cools off
• all of the above

The ________ measures how hard a mineral is.

• Miller Scale
• Dishong Scale
• Curly Scale
• Mohs Scale

What does inorganic mean?

• Something that is living
• Something that is dead, but was once living
• Something that was never living