The characteristics of the asthenosphere are that it is composed of semi-fused and solid materials. The asthenosphere is responsible for the renewal and expansion of the ocean floor. Asthenosphere The …

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 …

The upper mantle is predominantly solid, but this mantle’s malleable sections create tectonic activity. Two sections of the upper mantle are frequently recognised as distinct areas of Earth’s structure: the …

The portion of the interior beyond the crust is called the mantle. It is in a solid-state. It has a density higher than the crust portion. The thickness ranges from 10-200 km. The mantle extends from …

The word “astheno” means weak. Asthenosphere extends up to 400 km and is the main source of magma which comes over to the surface during volcanic eruptions. The boundary which divides the …

The upper position of the mantle of the earth is called the asthenosphere which is a weaker zone. It is from this weaker zone the molten rock materials find their way to the surface. The molten rock …

The asthenosphere is a semi-solid or semi-molten, soft and fluid layer. It is found below the lithosphere, between approximately 80 and 200 km below the earth’s surface.

The upper portion of the mantle is called the asthenosphere. The word astheno means weak. It is considered to be extending up to 400 km. It is the main source of magma that finds its way to the …

Asthenosphere Biosphere Hydrosphere Answer: b) Asthenosphere Explanation: The asthenosphere extends from about 100 km to approximately 700 km below Earth’s surface. 5. What are the two …

Answer: b) FALSE Explanation: The upper portion of the mantle is known as the asthenosphere. 5. Why is the term ‘SIAL’ used to refer to the crust and lithosphere? Since the major constituent minerals of …