EVERYDAY SCIENCE

Detailed explanation-1: -The outer core is the liquid largely iron layer of the earth that lies below the mantle. Geologists have confirmed that the outer core is liquid due to seismic surveys of Earth’s interior. The outer core is 2, 300 km thick and goes down to approximately 3, 400 km into the earth.

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: -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-4: -The mantle is not liquid. It is, however, ductile, or plastic, which means that on very long time scales and under pressure it can flow. The mantle is mainly composed of aluminum and silicates. The innermost layers of the Earth.

Detailed explanation-5: -Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top. Because of this, the crust is made of the lightest materials (rock-basalts and granites) and the core consists of heavy metals (nickel and iron).