The outer core lies under the mantle, and is 1,400 miles thick. Temperatures within the outer core range from 7,200 to 9,000 F. Pressure also increases in the outer core due in part to the weight of the crust and mantle above
The inner core at the center of the Earth consists mostly of iron. This layer is less than 800 miles thick. Even though the inner-core temperature is now thought to be hotter than the Sun's surface, the tremendous pressure this deep inside the Earth overrides the effects of temperature and prevents the iron from being liquefied. Instead, the iron at the core is a solid and has a spherical shape. also the other person looked this up on the internet
