GENERAL GEOLOGY

Detailed explanation-1: -The inner core is a hot, dense ball of (mostly) iron. It has a radius of about 1, 220 kilometers (758 miles). Temperature in the inner core is about 5, 200° Celsius (9, 392° Fahrenheit). The pressure is nearly 3.6 million atmosphere (atm).

Detailed explanation-2: -Below the crust lies a layer of very hot, almost solid rock called the mantle. Beneath the mantle lies the core. The outer core is a liquid mix of iron and nickel, but the inner core is solid metal.

Detailed explanation-3: -The inner core is believed to be composed of an iron–nickel alloy with some other elements.

Detailed explanation-4: -The Inner Core It is the centre and the hottest layer of the Earth. The inner core is solid and made up of iron and nickel with temperatures up to 5, 500oC. Due to its immense heat energy, the inner core is more like the engine room of the Earth.

Detailed explanation-5: -Earth’s inner core is solid because it is under such intense pressure from the weight of the entire planet that its atoms are held together by force. By contrast, the outer layers of Earth, while being slightly cooler (but still incredibly hot), have less pressure and thus their atomic form reverts to liquid.