Question

Differentiate convection and radiation.

Answer 1

S.No.	Convection	Radiation
1.	Flow of heat through a fluid from places of higher temperature to places of lower temperature by movement of the fluid itself.	Flow of heat from one place to another by means of electromagnetic waves.
2.	Convection needs matter to be present.	Radiation can occur even in vacuum.
3.	Convection seen in daily life: Hot air balloons, breeze, wind, chimney.	Radiation in daily life: White or light coloured cloths, highly polished surface of airplane, helps to reflect most of the heat radiation from the sun.