Just remember..

##1.## Inner Core

• iron and nickel in the solid state
• about 800 miles thick

##2.## Outer Core

• iron and nickel in the liquid state
• about 1400 miles thick

##3.## Lower Mantle

• flows with the consistency of asphalt
• about 1800 miles thick

##4.## Upper Mantle

• about 120 miles thick

##5.## Crust

• about 20 miles to 30 miles