GEOLOGY

Detailed explanation-1: -What observation can we make about Earth’s lithosphere AND asthenosphere? The asthenosphere floats on top of the lithosphere. The crust and the core make up the lithosphere. The crust and mantle make up the asthenosphere.

Detailed explanation-2: -Answer and Explanation: Lithospheric plates float on the uppermost part of the mantle called the asthenosphere. The asthenosphere is made up of solid rocks that become ductile and that float linearly, causing convection currents to set up inside the crust due to inner high pressure and temperature conditions.

Detailed explanation-3: -The earth’s crust is actually a two-component layer. The lithosphere is a thin layer of rock (average density of 2.7 grams per cc) and “floats” on top of a plastic-like layer called the asthenosphere.

Detailed explanation-4: -The lithosphere is the outermost mechanical layer, which behaves as a brittle, rigid solid. The asthenosphere is solid upper mantle material that is so hot that it behaves plastically and can flow.

Detailed explanation-5: -The lithosphere is above the asthenosphere and actually contains the crust and a small part of the asthenosphere as well. The lithosphere is rigid and the tectonic plates are located there.