Which layer lies directly beneath Earth's crust?

Which layer lies directly beneath Earth's crust?

• A. Outer Core
• B. Inner Core
• C. Crust
• D. Mantle

Answer: (D)

The layer directly beneath Earth's crust is the mantle. The crust sits on top of the mantle, and together they form the lithosphere, with the boundary between them known as the Mohorovičić discontinuity. The mantle extends far below the crust and is divided into the upper mantle, which works with the crust to influence surface geology, and the lower mantle. The upper mantle contains a partially molten region called the asthenosphere, where convection currents help move tectonic plates. The outer and inner cores lie much deeper beneath the mantle, while the crust remains the outermost shell.

The layer directly beneath Earth's crust is the mantle. The crust sits on top of the mantle, and together they form the lithosphere, with the boundary between them known as the Mohorovičić discontinuity. The mantle extends far below the crust and is divided into the upper mantle, which works with the crust to influence surface geology, and the lower mantle. The upper mantle contains a partially molten region called the asthenosphere, where convection currents help move tectonic plates. The outer and inner cores lie much deeper beneath the mantle, while the crust remains the outermost shell.