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Which of these describes how heat transferred by convection?

AWarm air rises and takes heat with it; eventually it cools and sinks
BAir molecules touch the warm ground, heating it up
CLand and ocean absorb and re-emit heat from the sun
DSunlight travels through space without the aid of fluids or solids

Verified Answer :

Answer;

A. Warm air rises and takes heat with it; eventually it cools and sinks

Explanation;

  • Heat transfer involves exchange of heat or thermal energy between two systems, such that heat flows from the system with higher temperature to the one with low temperature.
  • Convection is one of the three types of heat transfer, others being conduction and radiation.
  • Convection involves heat transfer in fluids. Heat is transferred by mass motion of a fluid such as water or air when heated and caused to move away from the heat source carrying thermal energy with it.

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