GEOLOGY

Detailed explanation-1: -Earth is made up of several layers. Layers based on chemical composition are the core, mantle and crust. According to mechanical properties, Earth’s layers are the lithosphere, asthenosphere, lower mantle (also known as mesospheric mantle), outer core and inner core, according to Phys.org (opens in new tab).

Detailed explanation-2: -Under the rigid layer of rock we live on, the Earth’s asthenosphere is like dense plastic. Because of its fluid-like properties, mantle convection can occur. Then, mantle convection is the main driver of plate tectonics.

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% of Earth’s total volume.

Detailed explanation-4: -The Mantle: The mantle is the thickest layer of the Earth, making up about 82% of its volume. The mantle is composed primarily of heavy metals, such as iron, nickel, magnesium, and others. Scientists describe the state of the mantle as ‘plastic.