You are watching: Compare and contrast convection and conduction
|Heat transport by conduction is the process in which heat transfer native the hot body to the cold human body due to complimentary electrons.||Convection warmth transfer is the process in which warmth transfer in fluids as result of the actual activity of molecules.||Radiation is the process of warm transfer in which warm transfer without any type of medium or directly.|
|It wake up due temperature differences.||It occurs due to density differences.||It wake up in every objects, in ~ the temperature above 0k.|
|It occurs only in solids.||It wake up in liquids and gas (fluids).||It occurs in every objects that solids, liquids, and also gas in ~ a temperature over ok or pure temperature.|
|This procedure has a slow-moving speed.||It is likewise a slow speed process.||It is a fast speed process.|
|Conduction does not follow the legislations of reflection.||Convection like conduction does not follow legislations of reflection.||Like the various other two modes of warm transfer conduction and convection, radiation also not adheres to the legislations of reflection.|
What is the conduction of heat?
The carry of warmth through a human body not involving radiation or the circulation of the material. In gasses carry is led to by collisions between the greater energy molecules in regions at greater temperatures through low energy molecules in adjacent cooler regions.
How does conduction of warmth occur?
In dielectric solids, the vibrations of molecules room transmitted through the body prefer waves, together a an outcome of the elastic bonding between the particles.These waves room of the same nature together sound yet have an extremely much higher frequencies and also their energies room quantized as phonons.On balance, an ext energy is moved by phonons from hotter to cooler parts of than is transferred the opposite way.Theories of warmth conduction law the phonons as if they to be gas molecules moving within the space occupied by the solid, gift scattered by person who is abnormal in the material.Conduction in nonmetallic liquids is intermediary in character between that in solids and that in gasses.See also: thermal conductivity
What is the convection of heat?
The process of transfer of warm in a fluid by the movement of the liquid itself. There room two varieties of convection that heat:Natural or free convection: When the motion of the fluid is due specifically to the visibility of the warm body in it giving rise to temperature and hence thickness gradients, the liquid thus relocating under the influence of gravity.Forced convection: In this form of convection a loved one motion between the hot body and also the liquid is kept by some external agency.
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See Also: Convection current
What is Radiation the heat?
Radiation is just one of the means of modes of warm transfer in which warm is transferred directly in the form of waves. The heat reached ~ above the planet from The sun is an instance of radiation warmth transfer.See also: Blackbody radiation
Watch the video to learn about the difference between heat transfer techniques by conduction, convection, and also radiation.Related topics