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Name the mantle-core interface where primary seismic waves slow down and secondary seismic waves disappear completely. - Geography

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प्रश्न

Name the mantle-core interface where primary seismic waves slow down and secondary seismic waves disappear completely.

विकल्प

  • Gutenberg Discontinuity

  • Mantlic Discontinuity

  • Core Discontinuity

  • Mohorovicic Discontinuity

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उत्तर

Gutenberg Discontinuity

Explanation:

The Gutenberg Discontinuity is the boundary between the mantle and the core. At this depth, primary seismic waves (P-waves) slow down significantly, and secondary seismic waves (S-waves) disappear completely because the outer core is in a molten state. This discontinuity occurs at around 2900 km below the Earth's surface.

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अध्याय 4: Earth’s Structure - EXERCISES [पृष्ठ ४३]

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मॉर्निंग स्टार Total Geography [English] Class 9 ICSE
अध्याय 4 Earth’s Structure
EXERCISES | Q I. 12. | पृष्ठ ४३
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