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What is the role of heat in Convectional Current Theory?

Answer and explanation

Correct answer: It heats mantle material and provides energy for convection currents.

Heat from Earth’s interior warms mantle material. The heated material expands, becomes relatively less dense, and rises, while cooler and denser material sinks. This cyclic motion creates convection currents that help move tectonic plates. Option C describes the sinking of cooled material in the convection cycle, but not the direct role of heat. Exam tip: in convection, hot, less dense material rises and cool, denser material sinks.

Related tags

Convection Current TheoryMantle ConvectionEarth InteriorPlate TectonicsContinental DriftPost Drift Studies And Convectional Current TheoryDistribution Of Oceans And ContinentsGeography

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