Question

DEFINE CONVECTION.......​

Answer 1

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Convection is the transfer of heat due to the bulk movement of molecules within fluids, including molten rock. Convection includes sub-mechanisms of advection, and diffusion. Convection cannot take place in most solids because neither bulk current flows nor significant diffusion of matter can take place.

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Answer 2

The mode of transfer of heat in fluids (liquids and gases) by which heat flows from one part of a fluid to another by the movement of fluid particles itself is called convection.