Respuesta :

The answer is the 3rd one "circular"

Answer;

The shape of convection current is circular

Explanation;

  • Convection is type of heat transfer which involves the transfer of thermal energy in fluids, that is gases and liquids.
  • Convection creates convection currents which helps in the distribution of thermal energy in all parts of a fluid. The convection currents occurs in a circular motion, such that heat is transferred from the hotter parts of a fluid to the cold parts of a fluid, until all the fluid attains the same temperature.
  • The convection currents that aid in the transfer of thermal energy in fluids are created by the temperature differences together with density differences in fluids.
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