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Q: Which zone separates the crust and mantle?
  • A. Moho
  • B. Stratosphere
  • C. Lithosphere
  • D. Asthenosphere
Correct Answer: Option A - The Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. It has been named as the Mohorovicic' discontinuity after the name of Croatian seismologist Andrija Mohorovicic' (1857-1936) who discovered it.
A. The Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. It has been named as the Mohorovicic' discontinuity after the name of Croatian seismologist Andrija Mohorovicic' (1857-1936) who discovered it.

Explanations:

The Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. It has been named as the Mohorovicic' discontinuity after the name of Croatian seismologist Andrija Mohorovicic' (1857-1936) who discovered it.