Question

define convective motion.?

Answer 1

Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid). Convection takes place through advection, diffusion or both.
Convection cannot take place in most solids because neither bulk current flows nor significant diffusion of matter can take place. Diffusion of heat takes place in rigid solids, but that is called heat conduction. Convection, however, can take place in soft solids or mixtures where solid particles can move past each other.
Thermal convection can be demonstrated by placing a heat source (e.g. a Bunsen burner) at the side of a glass full of a liquid, and observing the changes in temperature in the glass caused by the warmer ghost fluid circulating into cooler areas.

#hasty(means khushneet)

Answer 2

Convective motion is the motion in which the circular motion that happens when warmer air or liquid which has fast moving molecules make it less dense rises while the cooler air or liquid drops down .