Question

The lithosphere is sometimes defined as the ________.

1) crust and upper mantle
2) asthenosphere and mesosphere
3) outer and inner core
4) upper and lower mantle
5) lower mantle and outer core

Answer 1

The lithosphere is defined as the crust and the upper mantle. It is the outermost mechanical layer of the Earth that behaves as a brittle, rigid solid.

Step-by-step explanation:

The lithosphere is defined as the crust and the upper mantle. It is the outermost mechanical layer of the Earth that behaves as a brittle, rigid solid. The lithosphere is about 100 kilometers thick and includes both the crust and the portion of the upper mantle that exhibits brittle behavior.