Question

Where is Earth’s core located relative to the surface?

• A. 2,900 kilometers below the surface
• B. 3,900 kilometers below the surface
• C. At the crust–mantle boundary
• D. 1,900 kilometers below the surface

Hint:

Remember: The boundary between Earth's mantle and core lies around 2,900 km deep, while the crust–mantle boundary (Moho) is much shallower, averaging 30–50 km.

Answer 1

The Correct Option is A

The Earth's core begins approximately 2,900 kilometers beneath the surface, marking the boundary between the mantle and the outer core. This depth is known as the Gutenberg Discontinuity, where seismic waves change behavior due to the transition from solid mantle to liquid outer core.