Heat Transfer
Heat Transfer: Overview
This Topic covers sub-topics such as Transfer of Heat, Modes of Transfer of Heat, Infrared Waves, Temperature Gradient, Thermal Radiation, Spectrum of Radiation, Thermal Conduction, Rate of Heat Conduction and, Thermal Conductors
Important Questions on Heat Transfer
The surface temperature and the area are some of the factors on which the radiation from a body depends.
Explain the factors on which the radiation from a body depends.
Explain the frequency and wavelength of infrared waves.
Describe the applications of infrared waves.
Explain the control variables in an experiment.
Explain the difference between the cooling curve of conductors and insulators.
Explain the role of temperature gradient in transfer through conduction.
Define temperature gradient.
Describe the factors on which the rate of heat conduction depends.
Define the rate of heat conduction.
Explain some good effects of conductance of heat.
Explain the reason why a metal feels hotter than plastic during summer season.
What is a spectrum of radiation?
What do you mean by thermal radiation, and what is its importance? Thermal radiation is transferred as an electromagnetic wave. Do you agree with the statement? Describe the factors affecting the rate of radiation.
What you mean by thermal conduction? Explain how thermal conduction takes place in metals by taking a metal rod as an example. Explain, why, during summers, a metal feels hotter than a plastic kept at the same temperature.
Why can't heat energy get from the Sun to the Earth by conduction?
If you warm your hands by a fire, the heat energy reaches you by:
Which is the best thermal conductor?
Which property cannot be transferred by a wave?
Materials that let heat move through them easily or conduct heat well: (thermal conductor/ insulator/ semiconductor)
