noun
The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
-
The aesthenosphere is a layer of the Earth's mantle located below the lithosphere.
-
I just learned about the aesthenosphere in my geology class.
-
The aesthenosphere is like the Earth's squishy middle layer.
-
The aesthenosphere acts like a conveyor belt, moving the Earth's tectonic plates.