Question

what is upper mantle ,give a brief.
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Answer 1

Heya here we go...

Upper mantle (Earth)

Upper mantle (Earth)Part of the interior of the planet Earth

Upper mantle (Earth)Part of the interior of the planet EarthThe upper mantle of the Earth begins just beneath the crust about 35 km (22 mi) and ends at the top of the lower mantle at 670 km (420 mi). Temperatures range from approximately 200 °C (392 °F) at the upper boundary with the crust to approximately 900 °C (1,650 °F) at the boundary with the lower mantle. Upper mantle material which has come up onto the surface is made up of about 55% olivine, 35% pyroxene and 5 to 10% of calcium oxide and aluminum oxide minerals such as plagioclase, spinel or garnet, depending upon depth.

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Answer 2

Answer:

The thickness of the upper mantle is between 200 and 250 miles. ... Below the lithosphere is a layer of upper mantle called the asthenosphere. This is made up rock that is fluid and can move. It is this fluidity that powers the movement of the tectonic plates of the Earth's crust.