Which layer lies directly beneath the Earth's crust?

Which layer lies directly beneath the Earth's crust?

• A. Core
• B. Mantle
• C. Crust
• D. Atmosphere

Answer: (B)

The layer directly beneath the Earth's crust is the mantle. The crust sits on top of the mantle, with the boundary between them known as the Mohorovičić discontinuity (the Moho). The mantle extends much deeper, down to the outer core, and includes the upper, more rigid part as well as the lower, hotter part. The atmosphere is the gas envelope surrounding Earth, not a layer under the crust, and the core lies far below the mantle.

The layer directly beneath the Earth's crust is the mantle. The crust sits on top of the mantle, with the boundary between them known as the Mohorovičić discontinuity (the Moho). The mantle extends much deeper, down to the outer core, and includes the upper, more rigid part as well as the lower, hotter part. The atmosphere is the gas envelope surrounding Earth, not a layer under the crust, and the core lies far below the mantle.