Multiple choice

The upper part of the mantle upon which the crust of the earth floats is called?

  1. Mesophere

  2. Barysphere

  3. Asthenosphere

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The asthenosphere is the highly viscous, mechanically weak, and ductile region of the upper mantle of the Earth. It lies below the lithosphere and allows the tectonic plates to move.