EVERYDAY SCIENCE

Detailed explanation-1: -However, unlike the outer core, the inner core is not liquid or even molten. The inner core’s intense pressure-the entire rest of the planet and its atmosphere-prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.

Detailed explanation-2: -New research suggests that Earth’s ‘solid’ inner core is, in fact, endowed with a range of liquid, soft, and hard structures which vary across the top 150 miles of the inner core. 3, 200 miles beneath Earth’s surface lies the inner core, a ball-shaped mass of mostly iron that is responsible for Earth’s magnetic field.

Detailed explanation-3: -The inner core of the Earth has temperatures and pressures so great that the metals are squeezed together and are not able to move about like a liquid, but are forced to vibrate in place as a solid. The inner core begins about 4000 miles beneath the crust and is about 800 miles thick.

Detailed explanation-4: -The outer core surrounds the inner core. The inner core has pressures and temperatures so high that the metals are squeezed together and not able to move like a liquid but are forced to vibrate instead of solid.

Detailed explanation-5: -The inner core is solid because it is made of very dense, or heavy, materials-like iron and nickel. Even though it is very hot, these materials don’t “melt” very easily, so they stay solid.