SOLAR SYSTEM

Detailed explanation-1: -Asthenosphere. 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: -Meaning of Asthenosphere The upper mantle is referred to as the asthenosphere because of its unique properties. The term “asthenosphere” is derived from the Greek words “asthenes” meaning weak and “sphaira” meaning sphere.

Detailed explanation-3: -asthenosphere, zone of Earth’s mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere. The asthenosphere extends from about 100 km (60 miles) to about 700 km (450 miles) below Earth’s surface.

Detailed explanation-4: -The next layer is the mantle. The mantle extends from the crust 2900km down and is composed of silicates with large amounts of iron and magnesium. The third layer, the core, extends a further 3400km to the centre of the Earth. The core is primarily made of iron and nickel metals and is very hot-from 3200°C to 4000°C.

Detailed explanation-5: -The asthenosphere is solid upper mantle material that is so hot that it behaves like plastic and can flow. The lithosphere rides on the asthenosphere. The asthenosphere is solid but it can flow, like toothpaste. The asthenosphere and Lithosphere constitute the utmost concentric layers of our earth.