Unit 9 Review

The thinnest layer of the Earth is the ___________.

• mantle
• crust
• core

What is the thickest layer of the Earth?

• the crust
• the mantle
• the outer core
• the inner core

What is the core made of?

• steel
• iron 
• aluminum
• iron and nickel

What describes the outer core?

• solid
• liquid
• viscous
• gas

The layer made of solid rock that slowly flows…….

• Lithosphere

• Mantle

• Asthenosphere

• crust

Scientists determine what Earth’s interior looks like by using:

• Volcanoes
• Seismic Waves
• Continental Drift
• Convection Currents

This layer is a solid ball of metal.

• Crust
• Mantle
• Outer Core
• Inner Core

This layer includes all dry land and the Ocean floor.

• Crust
• Mantle
• Outer Core
• Inner Core

Which layer of the Earth is shown in BROWN?

• Crust
• Mantle
• Inner Core
• Outer Core

The inner core is

• solid

• liquid