Physics
Grade-6
Easy
Question
Transfer of heat with a medium of transfer and without contact is called_____
- Conduction
- Convection
- Radiation
- None
Hint:
In convection there is actual movement of particles as the particles are loosely bound.
The correct answer is: Convection
- Convection is the heat transfer that takes place when the warm particles move in currents.
- There is actual movement of the particles of the fluid.
- Convection occurs due to difference in temperature in two parts of fluid .
- The hot fluid rises up and cold fluid sink .
- Since in liquids and gases the particles are not that close as in solids the heat is transfer without actual contact
- Fluid medium is needed for the transfer.
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