WorksheetsThermal Conductivity and Heat Transfer Quiz
Total questions: 12
Worksheet time: 6mins
Which of the following materials is likely to have the highest thermal conductivity?
Wood
Copper
Glass
Plastic
If the thermal conductivity of a material is 0.5 W/m·K, what is the heat transfer rate through a 2-metre thick wall with a surface area of 10 square metres and a temperature difference of 20°C across it?
50 W
100 W
200 W
500 W
Which factor does NOT affect the rate of heat transfer by conduction?
Thickness of the material
Surface area
Colour of the material
Temperature difference
What is the unit of thermal resistance?
W/m·K
m²K/W
J/kg·K
W/m²
Which of the following is an application of thermal resistance?
Insulation in buildings
Electrical wiring
Solar panels
Wind turbines
What is the primary mode of heat transfer in a vacuum?
Conduction
Convection
Radiation
Evaporation
If a metal rod is heated at one end, which process primarily transfers heat to the other end?
Conduction
Convection
Radiation
Sublimation
Which of the following increases the thermal resistance of a wall?
Increasing the thickness
Decreasing the thickness
Increasing the thermal conductivity
Decreasing the surface area
What is the effect of increasing the surface area on the rate of heat transfer by convection?
Decreases the rate
Increases the rate
No effect
Depends on the material
Which of the following is a poor conductor of heat?
Aluminium
Steel
Rubber
Silver
In which scenario is convection the dominant form of heat transfer?
Heat transfer through a solid metal rod
Heat transfer in a vacuum
Boiling water in a pot
Heat transfer through a glass window
What is the thermal conductivity of a material if the thermal resistance is 0.2 m²K/W and the thickness is 0.1 metres?
0.5 W/m·K
1 W/m·K
2 W/m·K
5 W/m·K
