Question

Why is the inner core in a solid state rather than a liquid state?

Answer 1

Earth's inner core is solid Official. The core of the Earth is made up mainly of iron, in an outer liquid layer and an inner solid layer. The outer core is where the circulating conducting liquid generates the geodynamo, responsible for our magnetic field

Answer 2

The main components in the inner core is nickel and iron. Due to high temperature and pressure, the inner core exists in a solid state.