GEOLOGY

Detailed explanation-1: -The asthenosphere is solid upper mantle material that is so hot that it behaves plastically and can flow. The lithosphere rides on the asthenosphere. The asthenosphere is solid upper mantle material that is so hot that it behaves plastically and can flow.

Detailed explanation-2: -Below the lithosphere within the upper portion of the mantle is a plastic layer of rock called the asthenosphere. According to the theory of plate tectonics, the plates are driven by convection cells located within the plastic asthenosphere.

Detailed explanation-3: -The asthenosphere is the denser, weaker layer beneath the lithospheric mantle. It lies between about 100 kilometers (62 miles) and 410 kilometers (255 miles) beneath Earth’s surface.

Detailed explanation-4: -2 Pieces of the lithosphere that move around on top of the asthenosphere are called tectonic plates. Tectonic plates consist of the crust and the rigid, outermost part of the mantle.

Detailed explanation-5: -The lithosphere is the solid, outer part of Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below.