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Ok.
What can you expect?
1. explainations of the mode of transfer
2. Applications
3.Sample Questions
4. Nice hand-drawn pictures, and some taken from website : scroll over to see the links
At the ends of all the posts, you can view some videos, any reference abt videos in the post please scroll down.
Try doing a quiz that i found, plus my questionable questions.
And comments can be done at the end of the posts, no tagboards here.
What can you expect?
1. explainations of the mode of transfer
2. Applications
3.Sample Questions
4. Nice hand-drawn pictures, and some taken from website : scroll over to see the links
At the ends of all the posts, you can view some videos, any reference abt videos in the post please scroll down.
Try doing a quiz that i found, plus my questionable questions.
And comments can be done at the end of the posts, no tagboards here.
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Blog Archive
Followers
Credits
Physics matters textbook
Physics Insights
Physics 0-level keypoints
Physics Insights
Physics 0-level keypoints
Misconception Analysis
1 The transfer of thermal energy by conduction and convection requires a medium T/F
2 Liquids and gases do not transfer thermal energy by conduction. T/F
3 Metals are better conductors than non-metals because metals have free electrons T/F
4 Wool is effective insulator because it contains pockets of still air. T/F
5 It is better to place an air-conditioner at a high place so that convection currents will cause effective cooling. T/F
6 Radiation is the transfer of thermal energy by ultra-violet radiation T/F
7 Thermal energy transfer by radiation is dependent on surface area. T/F
8 A good emitter is also a good absorber of heat. T/F
9 A silvery surface is a good emitter and good reflector of heat. T/F
10 Food is kept warm when wrapped with aluminium foil because aluminium is a good reflector of heat T/F
11 Only if there is a high temperature difference then radiation can occur. T/F
ANS :
t f f t t t t f f f
Other questionable questions:
Glass - good or bad radiator ?
Which transfers heat the fastest amongst the 3 methods?
Is radiation occuring at any temperature ? Then when does it not occur? ( not really a questionable question )
If you stand in the sun for many hours, will the colour of your shirt REALLY make a difference ?
Defination list
Convection
Heat transfer by means of currents in the medium ( only in fluids )
Conduction
By molecular vibrations ( or free electron diffusion in solids) in all state of matter.
Radiation
Heat transfer by emission of infrared radiation
Heat transfer by means of currents in the medium ( only in fluids )
Conduction
By molecular vibrations ( or free electron diffusion in solids) in all state of matter.
Radiation
Heat transfer by emission of infrared radiation
COPY AND PASTE THIS IMAGE SO YOU CAN SEE IT
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