GENERAL GEOLOGY

Detailed explanation-1: -The Core is predominantly composed of iron and nickel. Even after 4.5 billion years of cooling, the Earth’s core remains very hot. The Earth’s core is divided into two layers, a solid inner core, and a liquid outer core . The Inner Core (D) (1216 km) is solid nickle-iron alloy.

Detailed explanation-2: -Unlike the mineral-rich crust and mantle, the core is made almost entirely of metal-specifically, iron and nickel.

Detailed explanation-3: -The mantle is the mostly solid bulk of Earth’s interior. The mantle lies between Earth’s dense, super-heated core and its thin outer layer, the crust. The mantle is about 2, 900 kilometers (1, 802 miles) thick, and makes up a whopping 84 percent of Earth’s total volume.

Detailed explanation-4: -asthenosphere (convecting mantle) – the soft layer of the mantle on which the lithosphere floats. outer core – a layer of molten iron and nickel that surrounds the inner core of the Earth.

Detailed explanation-5: -The inner core is believed to be composed of an iron–nickel alloy with some other elements. The temperature at the inner core’s surface is estimated to be approximately 5, 700 K (5, 430 °C; 9, 800 °F), which is about the temperature at the surface of the Sun.