What is the lithosphere?
The crust and the upper-most solid part of the mantle of Earth
The lithosphere is the solid rock that covers the planet. This includes the crust as well as the very most upper part of the mantle, which is solid rock.
all of the rock on earth from mountains to the sea floor is included in the lithosphere
Lithosphere is the crust and uppermost mantle make up a rigid outer layer.
Beneath the lithosphere, the rocks become partially molten, or melted. They are able to slowly flow because of the uneven distribution of heat deep within Earth. This region is called the asthenosphere. Beneath the asthenosphere, the rock becomes more dense. This region of Earth is called the lower mantle.