D'', "D-double-prime," for lack of a better name
The lower part of the mantle is actually names the mesosphere. It is overlain by the asthenosphere which is part of the upper mantle and this in turn is overlain by the lithosphere which is made up of the very uppermost mantle and the crust.
The mesosphere
I believe that is convection.
Earth's crust and brittle upper mantle is called the lithosphere.
No, the mantle is not the bottom layer of the Earth. The mantle is located between the Earth's crust and core, making up a significant portion of the Earth's volume. The core is the deepest layer, found at the center of the Earth.
The part of the mantle below the lithosphere is called the Asthenosphere.
The lower part of the mantle is called the "lower mantle" or "mesosphere", while the upper part of the mantle is referred to as the "upper mantle" or "asthenosphere".
It's called the lower mantle.
The lower part of the mantle is called the mesosphere.
Although the bottom of the lithosphere is also part of the mantle, the answer is the mantle.
Upper Mantle
The top part of a fireplace mantle is called the mantel shelf. It is the horizontal ledge that extends across the top of the fireplace to display decorative items.
The lower part of the mantle is actually names the mesosphere. It is overlain by the asthenosphere which is part of the upper mantle and this in turn is overlain by the lithosphere which is made up of the very uppermost mantle and the crust.
The top part of a wave is called the crest, while the bottom part is called the trough.
The mesosphere
Lithosphere
The upper level of the mantle is called the asthenosphere. It is a semi-fluid layer of the Earth's mantle located just below the lithosphere. The asthenosphere plays a key role in the movement of tectonic plates.