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Class 11GeographyInterior of the EarthInterior structure of the earthMedium
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Why is the lower mantle considered different from the upper mantle?

Answer and explanation

Correct answer: Pressure and mineral state change with depth

With depth increased pressure changes mineral behaviour. Exam tip: consider lower mantle as a high pressure layer.

Related tags

Lower MantlePressureMineral StateInterior Structure Of The EarthInterior Of The EarthGeographyClass 11 Mcq
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10 more MCQs
  1. 1If increase in seismic wave velocity and gravity value occur together what cautious conclusion is suitable?
  2. 2If wave velocity changes at the Moho boundary which conclusion is most suitable?
  3. 3If wave behavior changes at the Lehmann boundary it will be related to what?
  4. 4Why is the geothermal gradient considered a concept different from surface weather?
  5. 5If crust sample has light minerals but Earth's mean density is high what conclusion is suitable?
  6. 6Magnetic field and absence of S waves together can give what type of core clue?
  7. 7If a sample is obtained only from the upper crust, for which region can the conclusion drawn from it be considered most reliable?
  8. 8If Lehmann boundary and Moho boundary are treated as same what is the error?
  9. 9With reference to Earth's interior and seismic waves, which of the following cause-and-effect relationships is correct?
  10. 10If pressure and temperature increase with depth, why is it difficult to predict the behavior of deep materials from samples obtained at the surface?
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