Which part of Earth's interior has two distinct layers?

• Crust

• Mantle

• Core

• Crust and Core

Which is Earth's thinnest layer?

• Crust

• Inner Core

• Mantle

• Outer Core

Heat in the core and the ________ cause __________, which help to cycle materials on Earth.

• mantle, convection currents

• crust, wind

• mantle, waves

• crust, convection currents

Tags

NGSS.MS-ESS2-1

Starting with the center of Earth, label the layers in order.

A mineral is a naturally occurring solid that can corm by inorganic processes and has a crystal structure and definite chemical composition.

• True

• False

What causes the crystals in gneiss to line up in bands?

• deposition

• erosion

• pressure

• weathering

Metallic, glassy, earthy, and pearly are words that describe a mineral's _______.

• density

• luster

• hardness

• color

Mineral A has a hardness of 5.

Mineral B has a hardness of 7.

Mineral C can scratch Mineral A, but Mineral C can be scratched by Mineral B.

What ranking on the Mohs hardness scale should Mineral C be assigned?

Explain.

• 6

• because Mineral C scratched both mineral A and B.

• 8

• because C can scratch A, but B scratches C. So it has to be between Mineral A and B.

Which process acts on Earth's surface to break rocks into pieces?

• compaction

• deposition

• erosion

• weathering

Metamorphic rock forms as a result of changes in ______ and _______ in Earth's interior.

• melting and weathering

• weathering and erosion

• heat and pressure

• deposition and heat