Which part of earth is the solid rocky part of earth that can be divided into different layers based on physical proporties and chemical composion?

The solid rocky part of Earth is known as the lithosphere. It encompasses the crust and the uppermost part of the mantle, which can be divided into different layers based on physical properties, such as rigidity and composition, as well as chemical characteristics. The lithosphere is further divided into tectonic plates that float on the semi-fluid asthenosphere beneath it.