Which is the outermost layer of the earth composed of crust and upper mantle?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Lithosphere.
- Lithosphere is the rigid and outermost layer of the earth, consisting of the crust and the solid outermost layer of the upper mantle, composed of rocks and minerals.
- While the lithosphere is composed of rocks and minerals on earth, other spheres described by scientists include the biosphere, the atmosphere and the hydrosphere.
- The lithosphere is also where many of the geological processes that affect us originate. The movement of large pieces of the lithosphere accounts for the global locations of volcanoes, earthquakes and mountain ranges, as well as the shape and location of our continents.