Question

What is the difference between Conduction and convection?

Answer 1

Hint: The physical act of the conversion of thermal energy by heat dissipation between two devices is known as the transfer of heat. Conduction, convection and radiation are the three modes of heat transfer.

Complete step by step answer:

Conduction	Convection
The mechanism of heat transfer from the hot body to the cold body due to free electrons is heat transfer by conduction.	The mechanism in which heat transfer in fluids is due to the physical movement of molecules is convection heat transfer.
Owing to the difference in temperature, the heat transfer takes place.	The flow of heat happens regardless of the disparity in mass.
In conduction, the heat transfer is sluggish.	The heat transfer in the convection phase is quicker.
The heat transfer happens through a rigid component that is heated.	Via intermediate artefacts, the heat transfer happens. Heat transmission between air and water, for instance.
The law of reflection and refraction is not observed by this.	The law of reflection and refraction is not observed by this.

Additional information: In dielectric solids, as a result of elastic bonding between the particles, the movements of molecules are conveyed across the body like waves.
These waves are of the same type as echo, but they have far higher frequencies and are quantized as phonons for their energies. On average, phonons relay more energy from hotter to cooler sections than is distributed the opposite direction.
Heat conduction hypotheses treat the phonons as if they were gas molecules travelling inside the area filled by the solid, being spread by material irregularities. The conduction between that of solids and that of gases in non-metallic liquids is intermediate in character.
There are two types of heat convection:
Natural or Free convection: When the fluid's motion is due purely to the hot body's presence in it, resulting in temperature and hence density gradients, the fluid shifts under the influence of gravity.
Forced convection: A relative motion between the hot body and the fluid is maintained by some external agent in this form of convection.

Note: The temperature defines the quantity of thermal energy available and the heat flow reflects the movement of thermal energy. On a microscopic scale, the direct correlation to thermal energy is the kinetic energy of molecules. The molecules increase in thermal agitation as temperature increases, expressed in linear motion and vibration. The regions containing higher kinetic energy transfer energy to the regions containing lower kinetic energy.