EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where is the asthenosphere found in the Earth’s layers?
A
crust
B
upper mantle
C
lower mantle
D
core
Explanation: 

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, 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-3: -The asthenosphere is not divided into smaller layers. Instead, it is a layer of plastic rock that forms the upper mantle, the layer of the Earth between the crust and the core. The asthenosphere marks a boundary between the mantle and the crust.

Detailed explanation-4: -The asthenosphere is the semi-rigid part of the middle mantle that flows like hot asphalt under a heavy weight. The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere. The crust is composed of two rocks.

Detailed explanation-5: -The asthenosphere is the next mechanical layer. It consists of the solid upper mantle material that is so hot that it behaves plastically and can flow. The lithosphere rides on the asthenosphere. Because the asthenosphere can flow, it bends and deforms instead of breaking under stress.

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