Which layer of earth is best characterized as layer of soft hot rock

Answer 1

The layer of earth that is best characterized as a layer of soft hot rock is the asthenosphere. The asthenosphere is a semi-fluid layer located in the upper mantle of the earth, below the lithosphere. It consists of partially molten rock that is capable of flowing and deforming over long periods of time. The high temperature and pressure conditions in the asthenosphere give it a soft and plastic-like consistency.