The crust and upper mantle make up Earth’s ______.
*
3 points
Asthenosphere
Core
Lithosphere
Continents
Lithosphere
The crust and upper mantle make up Earth's lithosphere.
To find the answer to this question, we need to understand the different layers of the Earth's structure.
The Earth's structure can be divided into several layers, which include the crust, mantle, and core. The crust is the outermost layer of the Earth, and it is thinnest in comparison to the other layers.
The uppermost part of the mantle, which extends from the base of the crust to a depth of about 50-60 kilometers below the surface, is known as the upper mantle. This layer is solid, but it is capable of flowing slowly over long periods of time, giving it a semi-plastic consistency.
The crust and the upper mantle together form a rigid layer called the lithosphere. The lithosphere includes both the Earth's crust and the uppermost solid part of the mantle. It consists of several tectonic plates that float on the semi-fluid asthenosphere below.
Therefore, the correct answer to the question is the "lithosphere," as the crust and upper mantle together make up Earth's lithosphere.