which part of the earth is made of solid iron and nickel?
The Lower Mantle- part of the second layer of the earth which is mostly melted rock. The whole mantle going down is 1800 miles down. The Outer Core- is made up of liquid metals mostly iron nickel and minor sulfur. The outer core goes 1375 miles down. The Inner Core- the most inner layer of the earth which is solid and made of iron and nickel. The inner core is 1750 miles to the center. How the layers of the Earth were created.