how conduction Convection and radiation are alike and how they are different?
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- Conduction is the transfer of heat through matter without the actual movement of molecules from their positions.
- Convention is the transfer of heat in which molecule of a medium actually move to the source of energy to absorb heat and then move away from it .
- Radiation is a transfer of heat from hot body to cold body directly , without heating the space in between the two bodies .
- Convection occurs in solid , liquids , and gases .
- Conduction occurs only in liquids and gases .
- Radiation needs no material medium to transfer heat .
- Heat from the candle flame warms the part of spoon in hand due to conduction .
- Motion of the paper piece in water is due to convection of heat .
- Heat energy reaches us from the sun due to radiation .
- All of these ( conduction , convention and radiation ) are heat energy resources .
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