Answers

2014-05-26T10:48:01+05:30
1) Conduction-  is the direct heat transfer from one substance to another
Eg: Ice melting in your hand

2) Convection- is the direct heat transfer from a fluid. Air is a fluid.
Eg: Green house effect

3) Radiation- the transfer of heat energy through empty space
Eg: The sun  
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2014-06-01T20:25:56+05:30
 Conduction-  is the direct heat transfer from one substance to another  Convection- is the direct heat transfer from a fluid. Air is a fluid   Radiation- the transfer of heat energy through empty space
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