The Upper Mantle.
The upper mantle
Asthenosphere
The upper mantle is also known as the asthenosphere.
Another name for the upper mantle is the "asthenosphere." This layer lies beneath the Earth's crust and extends to a depth of about 700 kilometers. The asthenosphere is characterized by its semi-fluid properties, allowing for the movement of tectonic plates above it.
Another name for the Continental Drift theory is "Plate Tectonics." This theory explains the movement of Earth's lithosphere plates over the asthenosphere.
asthenosphere
The asthenosphere is a semi-fluid layer of the Earth's upper mantle beneath the lithosphere. It is responsible for the movement of tectonic plates due to its semi-fluid nature, allowing them to slide and shift over the asthenosphere. The asthenosphere plays a crucial role in plate tectonics and the dynamics of the Earth's surface.
Other words that can be used for asthenosphere are crust and mantel.
The upper part of the mantle is also called the asthenosphere. This layer is partially molten and lies just beneath the lithosphere.
The plastic zone is also called the asthenosphere,because in the solid bottom part of the mantle, the temperature is sufficient to make the rock plastic, meaning, it flows.
It is called the asthenosphere.
asthenosphere