Layers of the Earth
By Abigail Keesling
The outer core is liquid and is about 1,408 miles thick. The outer core is made of nickel and iron. The outer core is located between the inner core and the mantle. It is located 1,800 miles under the earth's crust. The temperature of the outer core is about 8000 degrees farenheight.
The Inner core is the center of the earth. The inner core is a solid ball. The inner core is made of nickel and iron alloy. It is thought to be about as hot as the sun. The Inner core was found by the seismologist Inge Lehmann.