EVERYDAY SCIENCE

Detailed explanation-1: -Earth’s lithosphere includes the crust and the uppermost mantle, which constitute the hard and rigid outer layer of the Earth.

Detailed explanation-2: -The lithosphere is the rocky outer part of Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of Earth.

Detailed explanation-3: -Earth’s Interior. The Earth is divided into three main layers. The dense, hot inner core (yellow), the molten outer core (orange), the mantle (red), and the thin crust (brown), which supports all life in the known universe.

Detailed explanation-4: -The solid inner core (Fig. 1) is the most remote and enigmatic part of our planet, and, next to the crust, is the smallest “official” subdivision of Earth’s interior. It was discovered in 1936 (1), and by 1972 it was established that it was solid, albeit with a very small rigidity (2–4).

Detailed explanation-5: -Earth’s outer core is a fluid layer about 2, 260 km (1, 400 mi) thick, composed of mostly iron and nickel that lies above Earth’s solid inner core and below its mantle.