Rocks and Minerals

Rocks change over time from one type to another. This process is called

• melting

• erosion

• the rock cycle

• weathering

A rock forms in layers of small pieces. It is a _______rock.

• metamorphic

• igneous

• mineral

• sedimentary

Mohs' scale is used to identify a mineral's-

• hardness

• streak

• luster

• color

Which of the following minerals is the hardest on Mohs' hardness scale?

• quarts

• diamond

• gypsum

• talc

If you describe a mineral as being shiny, you are describing the property of -

• color

• hardness

• luster

• streak

A rock that has been changed by pressure and heat is called a(n) _____ rock.

• sedimentary

• metamorphic

• igneous

• metallic

Tags

NGSS.MS-ESS2-1

Heat and pressure change sedimentary rock to metamorphic or igneous rock?

(a)  

Igneous rock is eroded and deposited at the bottom of the river, eventually forming sedimentary or metamorphic rock?

(a)  

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

_______ cools and hardens as if flows into the ocean. The new _______ rock is weathered and eroded by waves.

• lava and igneous

• magma and metamorphic

• sand and sedimentary

Completely melted rock erupts from a volcano and hardens to form (a)   rock.