Question

the mohorovicic discontinuity is the ________.a. division between the lithosphere and asthenosphereb. boundary between solid and molten rockc. transition from granitic to basaltic crustd. boundary where crust gives way to mantleplease select the best answer from the choices provided

Explanation:

The Mohorovicic discontinuity, or Moho, is the boundary between the Earth's crust and the mantle. It was discovered by seismologist Andrija Mohorovicic.

• Option a: The division between the lithosphere and asthenosphere is not the Moho. The lithosphere - asthenosphere boundary is within the upper mantle.
• Option b: There are regions within the mantle and crust with solid and molten rock, but the Moho is not defined by this.
• Option c: The transition from granitic (continental crust) to basaltic (oceanic crust) is within the crust, not the Moho.
• Option d: This correctly describes the Moho as the boundary where the crust gives way to the mantle.

Answer:

D. boundary where crust gives way to mantle