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.
Based on the abundance of chemical elements in the solar system, their physical properties, and other chemical constraints regarding the remainder of Earth's volume, the inner core is believed to be composed primarily of a nickel-iron alloy, with very small amounts of some other elements.