Layers of the Earth

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

Why is the inner core solid?

• its unknown
• what it's made of
• the pressure
• it is colder than the outer core

Which layer of the Earth is the only liquid layer?

• Outer Core
• Inner Core
• Mantle
• Lithosphere

What is the correct order (starting from the surface) of Earth's layers?

• crust, outer core, inner core, mantle
• mantle, outer core, inner core, crust
• crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle

What happens to pressure as we move from the crust to the inner core?

• Pressure Decreases
• Pressure Increases
• Nothing

What happens to temperature as we move from the crust to the inner core?

• Decreases
• Increases
• Nothing

This layer of Earth is solid Iron and Nickel

• Outer Core
• Mantle
• Inner Core
• Crust