Question

What is convection?
Please help​

Answer 1

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.

"the final transfer of energy to the surface is by convection"

Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity.

Answer 2

refer to the attachment

and even Ayesha di left forever