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Subjects
Class 11GeographyDistribution of Oceans and ContinentsPost-drift studies and Convectional Current TheoryHard
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What is the basic physical reason for the formation of convection currents in the mantle?

Answer and explanation

Correct answer: Difference in temperature and density

Hot material becomes lighter and rises, while cooler material becomes denser and sinks. Exam tip: understand convection through temperature and density differences.

Related tags

TemperatureDensityMantle ConvectionPost Drift Studies And Convectional Current TheoryDistribution Of Oceans And ContinentsGeographyClass 11 Mcq
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10 more MCQs
  1. 1What was the main purpose of post-drift studies?
  2. 2Convectional Current Theory is mainly associated with which scientist?
  3. 3Convection currents are considered to occur in which part of the Earth?
  4. 4According to Convectional Current Theory what does hot material in the mantle do?
  5. 5What is considered the main cause of convection currents?
  6. 6Arthur Holmes considered convection currents as a possible force for what?
  7. 7Which weakness of Wegener's theory did Convectional Current Theory try to reduce?
  8. 8What does cool and heavy material do in the mantle?
  9. 9What is the simple meaning of convection current?
  10. 10What is considered one major source of heat inside the Earth?
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