INDIAN GEOGRAPHY

Detailed explanation-1: -The inner core is at the center of the Earth because it is the densest, made of solid iron and nickel.

Detailed explanation-2: -The densest layer is the solid metal inner core, the mantle is of intermediate density, and the least dense layer is the lithosphere, particularly the continental lithosphere.

Detailed explanation-3: -At the center of the Earth lies the core, which is nearly twice as dense as the mantle because its composition is metallic (iron-nickel alloy) rather than stony.

Detailed explanation-4: -Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth’s core, at its center, is denser than its crust. The lowest layer of the atmosphere is denser than the upper layer.

Detailed explanation-5: -Due to increase in pressure and presence of heavier materials like Nickel and Iron towards the centre, the density of earth’s layers also gets on increasing towards the centre. The average density of the layers gets on increasing from crust to core and it is nearly 14.5g/cm3 at the very centre.