Question

What are the differences between convection and radiation?

Answer 1

Sl. No.	Convection	Radiation
1.	The process of transmission of heat from the hotter object to the colder object by the actual movement of the particles of the medium is called convection.	The process of transmission of heat from the hotter object to the colder object in straight lines without any material medium is called radiation.
2.	Convection takes place only in liquids and gases. As it involves the actual movement of the particles, convection does not take place in solids.	Radiation takes place in solids, liquids and gases. It also takes place in vacuum because radiation does not need a material medium to transfer heat.
3.	Example: Land and sea breezes occur due to convection currents.	Example: Heat from the Sun is transmitted to the Earth through radiation.