Distinguish between Radiation and Convection.
Answers
Answer:
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.
Explanation:
BASIS FOR COMPARISON CONDUCTION CONVECTION RADIATION
Meaning Conduction is a process in which transfer of heat takes place between objects by direct contact. Convection refers to the form of heat transfer in which energy transition occurs within the fluid. Radition alludes to the mechanism in which heat is transmitted without any physical contact between objects.
Represent How heat travels between objects in direct contact. How heat passes through fluids. How heat flows through empty spaces.
Cause Due to temperature difference. Due to density difference. Occurs from all objects, at temperature greater than 0 K.
Occurence Occurs in solids, through molecular collisions. Occurs in fluids, by actual flow of matter. Occurs at a distance and does not heats the intervening substance.
Transfer of heat Uses heated solid substance. Uses intermediate substance. Uses electromagnetic waves.
Speed Slow Slow Fast
Law of reflection and refraction Does not follow Does not follow