differentiate between conduction and convection
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Answer:
Difference Between Conduction and Convection
1) Definition of Conduction and Convection
Conduction is a mechanism of heat transfer through solid materials. Conduction as a process represents an exchange of kinetic energy of molecules in their mutual collisions. In the collision of molecules, kinetic energy is exchanged, whereby faster molecules that have higher kinetic energy and greater heat give part of the heat to slower molecules that have lower heat level. Convection is a mechanism of indirect heat transfer. Depending on the temperature of the solid body and the fluid, one of them will give (warmer), and the other (cooler) will receive thermal energy. The greater the speed of movement of the fluid the more convection increases.
2) Cause of Conduction and Convection
Conduction happens because of hear difference, while there is density difference in case of convection.
3) Occurrence of Conduction and Convection
Conduction occurs only in solids (direct transfer of energy). Convection occurs by flow of energy in fluids.
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While conduction is the transfer of heat energy by direct contact, convection is the movement of heat by actual motion of matter; radiation is the transfer of energy with the help of electromagnetic waves
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