physics quiz thermal heat transfer. question 1 what is the method of heat transfer from the heater...
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![Page 1: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/1.jpg)
Physics Quiz
Thermal Heat Transfer
![Page 2: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/2.jpg)
Question 1
What is the method of heat transfer from the heater to the metal plate?
Answer: Radiation
![Page 3: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/3.jpg)
Question 2
What is the method of heat transfer from the metal plate to the wax?
Answer: Conduction
![Page 4: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/4.jpg)
Question 3
What is the method of heat transfer from the wax to the cork?
Answer: Conduction
![Page 5: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/5.jpg)
Question 4
Which stopper will slide down first? Why?
Answer: Stopper from the dull black metal plate because black is a better absorber of heat than shiny surface.
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Question 5
Which heat transfer method(s) will the vacuum layer of the thermal flask help to minimise?
Answer: Conduction and Convection
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Question 6
Which heat transfer method(s) will the silvered wall of the thermal flask help to minimise?
Answer: Radiation
![Page 8: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/8.jpg)
Question 7Which heat transfer method(s) will the plastic cap of the thermal flask help to minimise?
Answer: Conduction (since it
is made of an insulator) and Convection (since it does not allow convection current to transfer heat out of the flask)
![Page 9: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/9.jpg)
Question 8
Hot substance
Styrofoam box
Styrofoam box is used to contain hot substances
because styrofoam is a good …………………
Answer: insulator
![Page 10: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/10.jpg)
Question 9
Besides colour and texture, what are the
other factors that will affect the rate of heat
transfer by radiation?
Answer: Surface temperature and surface area
![Page 11: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/11.jpg)
Question 10
What is the colour of the cooling fin?
Answer: Black
(Black is a good emitter of heat)
![Page 12: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/12.jpg)
Question 11
Metal is the material used for cooling fin because it is a good …………………
Answer: conductor
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Question 12 - True or False
Radiation of heat can take place without a medium
Answer: True
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Question 13 - True or False
Convection of heat is caused by molecular vibration.
Answer: False
Convection is caused by density difference.Molecular vibration causes conduction of heat
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Question 14 - True or False
Poor conductors are good insulators.
Answer: True
![Page 16: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/16.jpg)
Question 15 - True or False
Gases are better conductor than solids.
Answer: False(Gas particles are very far apart hence it is difficult to
transfer heat by molecular vibration among the particles.)
![Page 17: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/17.jpg)
Question 16 - True or False
Convection can take place in gas and liquid only.
Answer: True
![Page 18: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/18.jpg)
Question 17 - True or False
Shiny surfaces are good absorber of heat.
Answer: False
Shiny surface will reflect heat hence it is a poor absorber of heat.
![Page 19: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/19.jpg)
Question 18 - True or False
Black and rough surfaces are good
emitter of heat.
Answer: True
![Page 20: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/20.jpg)
Question 19 - True or False
Hot tea in a black cup cools down faster than
hot tea in a white cup.
(Assuming the temperature of the tea in both cups are
the same and the material of the cups are the same.
Answer: True
![Page 21: Physics Quiz Thermal Heat Transfer. Question 1 What is the method of heat transfer from the heater to the metal plate? Answer: Radiation](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d995503460f94a83d37/html5/thumbnails/21.jpg)
Question 20 - True or False
Metals are better conductor than non-
metals.
Answer: True
(because metals have free electrons that helps in heat transfer by molecular vibration)