Rocks

Hardness is a property that helps identify minerals. Scientists use a scale of 1-10 to show the hardness of a mineral.

• true

• false

Tags

NGSS.MS-PS1-1

Emily was looking at a rock and saw tiny crystals. Emily should know that all rocks are made up of _____.

• diamonds

• minerals

• fossils

• dirt

Tags

NGSS.MS-ESS2-1

If I say that a penny can scratch a rock, what property am I referring to?

• Color

• Weight

• Hardness

• Luster

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

• luster

• streak

• cleavage

• fracture

How do you test the hardness of a mineral? 

• Throw it against a wall

• Step on it

• Scratch Test

• Kick it until it breaks

If you feel that a mineral is rough or bumpy, you are testing its

• Texture

• Luster

• Hardness

Hardness, color, and luster are examples of a mineral's ___________.

• price

• weight

• property

• name

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Using the Mohs Hardness Scale, what  mineral is the hardest?

• Quartz

• Diamond

• Feldspar

• Talc

If a scientist states that piece of pyrite has a metallic shine, what property is he referring to for that rock?

• It's shape.

• It's luster.

• It's texture.

• It's hardness.

__________ rock  is a rock formed by melting lava and cooling to harden.  

• Igneous

• Metamorphic

• Sand

• Sedimentary