EVERYDAY SCIENCE

Detailed explanation-1: -The inner core is around 4, 700 degrees Celsius, it is around 6, 400 km in depth. The inner core is made of iron which is freezing over it at the rate of 1, 000 tonnes a second and yet only 4 per cent of the core has frozen over 4.5 billion years.

Detailed explanation-2: -The core is made of two layers: the outer core, which borders the mantle, and the inner core. The boundary separating these regions is called the Bullen discontinuity. Outer Core The outer core, about 2, 200 kilometers (1, 367 miles) thick, is mostly composed of liquid iron and nickel.

Detailed explanation-3: -5 In the center of Earth is the core, consisting of two layers: the inner and outer core. The entire iron and nickel core is extremely hot, so it is not surprising to learn that the outer core is in a molten state. However, the inner core’s iron and nickel are solid.

Detailed explanation-4: -Outer Core: The outer core, which is liquid, is about 1300 miles (2092 km) thick. Both the inner and outer cores consist primarily of iron and nickel and are extremely hot with temperatures ranging from 7200–9000℉ (4000–5000℃). Mantle: Most of Earth’s volume is in the mantle.

Detailed explanation-5: -Above the inner core is the outer core, a shell of liquid iron. This layer is cooler but still very hot, perhaps 7, 200 to 9, 000 degrees Fahrenheit (4, 000 to 5, 000 degrees Celsius).