##color(darkorange)”The asthenosphere”## is a layer (zone) of Earth’s mantle lying beneath the lithosphere.

• It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid.

• The rocks are also less dense than the rocks in the lithosphere

• It is believed to be much hotter and more fluid than the lithospher

• Asthenosphere extends from about 100 km (60 miles) to about 700 km (450 miles) below Earth’s surface