Question
Differentiate between conduction, convection and radiation.

Answer

ConductionConvectionRadiation
Material medium is required.Material medium is required.Material medium is required.
It is due to the temperature difference.It is due to density difference.It occurs from all bodies above 0 K.
Heat flows from higher to lower temperature.Heat flows from lower to higher density.Heat flows from higher to lower temperature.
It heats up the medium.It also heats up the medium.It does not heat up the medium.
It is a slow process.It is also a slow process.It propagates with speed of light.
It does not obey the laws of refraction and reflection.It also does not obey the laws of refraction and reflection.It obeys the law of refraction and reflection.

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