Minerals and metamorphic

How do metamorphic rocks form?

• melted rock cools and hardens

• pieces of rock and other materials squeeze together

• heat and pressure creates a new rock

How can the streak of a mineral be tested?

• Rub it across a tile to see the color of the powder it leaves.

• Rub it against different things to see how easily it can be scratched.

• Break it to see if the pieces are cubes or sheets.

• Shine a bright light on it to see how its surface reflects light.

What property of minerals is measured by scratching the surface of the mineral?

• magnestism

• hardness

• color

• luster

Rocks are mostly made of

• minerals

• lava

• fossils

• dirt

Tags

NGSS.MS-ESS3-1

_________ is how easily something can be scratched.

• specific gravity
• luster
• hardness

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

• price
• weight
• property
• name

A mineral is...

• solid material made from many different kinds of rocks
• a solid matter formed in nature and found in earth materials (rocks)
• made from layers of sediment
• formed from heat of magma

Tags

NGSS.MS-ESS3-1

True or false? A rock always stays the same.

• true

• false

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Morph means what?

• change
• alter
• switch
• rearrange

Tags

NGSS.MS-LS1-7

Which texture best describes the rock above?

• porphyritic 
• nonfoliated
• foliated
• clastic