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Type: Multiple-Choice
Category: Earth's Layers
Level: Grade 9
Tags: Moho discontinuity crust mantle
Author: appier
Last Modified: 6 years ago

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Grade 9 Earth's Layers

The Mohorovicic discontinuity, more easily pronounced as the "Moho," is
  1. the boundary between the crust and the mantle.
  2. the boundary between the mantle and the core.
  3. an earthquake wave that travels along the Earth's surface.
  4. the boundary between the continental shelf and the ocean floor.