GEOLOGY

Detailed explanation-1: -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-2: -Although having a composition similar to Earth’s solid inner core, the outer core remains liquid as there is not enough pressure to keep it in a solid state.

Detailed explanation-3: -The outer core is the only entirely liquid layer within the Earth. It starts at a depth of 2, 890 km and extends to 5, 150 km, making it about 2, 300 km thick.

Detailed explanation-4: -The outer core is not under enough pressure to be solid, so it is liquid even though it has a composition similar to that of the inner core. Sulfur and oxygen could also be present in the outer core. Without the outer core, life on Earth would be very different.

Detailed explanation-5: -Magma plume Hot rock inside the Earth melts into a liquid called magma.