GEOLOGY

Detailed explanation-1: -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: -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.

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: -1 Answer. The crust and the inner core are solid, whereas the outer core and inner mantle are liquid.

Detailed explanation-5: -The inner core is in the solid-state whereas the outer core is in the liquid state. This is because although the temperature is very high inside the inner core, the pressure is also very high, making it solid.