Question

The lithosphere includes:

• A. asthenosphere and mesosphere
• B. crust and uppermost, rigid mantle
• C. outer core and lower mantle
• D. outer core and inner core

Answer 1

The correct option is B crust and uppermost, rigid mantle

Earth mainly consists of four layers namely crust, mantle, outer core and inner core.

Lithosphere is the rigid outer layer of the earth which includes crust and uppermost mantle.

Crust: This is about 8 km thick inside and is highly explored. The continental crust is composed mostly of granite. The oceanic crust consists of a volcanic lava rock called basalt.

Mantle: It is composed mostly of silicate rocks rich in magnesium and iron.