Distinguish between conduction, convection and radiation. - Vidyadip

Question

Distinguish between conduction, convection and radiation.

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Answer

S. No	Conduction	Convection	Radiation
1.	It is the transfer of heat by direct physical contact.	It is the transfer of heat by the motion of a fluid.	It is the transfer of heat by electromagnetic waves.
2.	It is due to temperature difference. Heat flows from high temperature region to low temperature region.	It is due to difference in density. Heat flows from low density region to high density region.	It occurs from all bodies at temperatures above 0K.
3.	It occurs in solids through molecular collisions, without actual flow of matter.	It occurs in fluids by actual flow of matter.	It can take place at large distances and does not heat the intervening medium.
4.	It is a slow process.	It is also a slow process.	It propagates at the speed of light.
5.	It does not obey the laws of reflection and refraction.	It does not obey the laws of reflection and refraction.	It obeys the laws of reflection and refraction.

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