Question

wny!
Q5. What is meant by 'convection"? Explain with the help of an example. Why is that
convection cannot take place in solids?​

Answer 1

CONVECTION

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Everyday Examples of Convection
Boiling water - The heat passes from the burner into the pot, heating the water at the bottom. ...
Radiator - Puts warm air out at the top and draws in cooler air at the bottom.
Steaming cup of hot tea - The steam is showing heat being transfered into the air.

Convection is heat transfer by mass motion of a fluid such as air or water. Convection does not occur in solids because the particles within are too tightly packed to facilitate the process. ... No, convection not possible in solids . Because its boundary phenomenon .

Answer 2

Explanation:

Convection is the heat transfer due to the bulk movement of molecules within fluids such as gases and liquids, including molten rock ( rheid ). Convection includes sub-mechanisms of advection (directional bulk-flow transfer of heat), and diffusion (non-directional transfer of energy or mass particles along a concentration gradient).