GEOLOGY

Detailed explanation-1: -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. The temperature and pressure of the asthenosphere are so high that rocks soften and partly melt, becoming semi-molten.

Detailed explanation-2: -asthenosphere (convecting mantle) – the soft layer of the mantle on which the lithosphere floats.

Detailed explanation-3: -The asthenosphere is an upper mantle material that is so hot that it behaves plastically (i.e. ductile) and can flow. The lithosphere rides on the asthenosphere. Scientists know that the mantle is extremely hot because of the heat flowing outward from it and because of its physical properties.

Detailed explanation-4: -Under the continents is a layer of solid rock known as the upper mantle or asthenosphere. Though solid, this layer is weak and ductile enough to slowly flow under heat convection, causing the tectonic plates to move. Public Domain Image, source: Christopher S.

Detailed explanation-5: -Asthenosphere ‐ A hot, malleable semi liquid zone in the upper mantle, directly underneath the lithosphere, on which the plates of the lithosphere move (or float).