Whatâs Eating You? Chronic stomach pain isnât fun â I used to be a chronic overeater, and it was tough to teach myself to put the fork down when I started to feel full. Once I got a handle on my overeating, I still suffered from stomach pain.
A layer of the upper mantle that flows due to heat currents moving through solid rock. Outer Core. the liquid layer made up of hot liquid iron and nickel that surrounds the inner core. Inner Core. a dense ball of solid metal that is the hottest and densest layer of the Earth.
Outer and Inner Core. There are two very distinct parts of the core: the outer and the inner core. The outer core is 2300 km thick and the inner core is 1200 km thick. The outer core is composed mainly of a nickel-iron alloy, while the inner core is almost entirely composed of iron.