Multiple choice

The innermost layer of the Earth is known as

  1. Lithosphere

  2. Mesosphere

  3. Asthenosphere

  4. Barysphere

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

The Earth's innermost layer is the Core (also called Barysphere in older literature). It consists of a solid inner core and liquid outer core, primarily composed of iron and nickel. The Lithosphere is the rigid outer layer, while Asthenosphere is the ductile layer beneath it.