WorksheetsHeat Transfer Quiz
Total questions: 20
Worksheet time: 10mins
Which method of heat transfer occurs mainly in solids?
Convection
Conduction
Radiation
Evaporation
What is the main method of heat transfer in liquids and gases?
Conduction
Convection
Radiation
Sublimation
Which of the following is an example of heat transfer by radiation?
Heating a metal rod by touching it to a flame
The Sun warming the Earth
Boiling water in a pot
Melting ice in your hand
What is the unit of specific heat capacity in the SI system?
J/kg
J/kg°C
W/mK
N/m
Which material is the best conductor of heat?
Wood
Glass
Copper
Plastic
Which of the following is NOT an example of convection?
Boiling water in a pot
Warm air rising in a room
Heating a metal spoon in hot soup
Ocean currents
Which process does NOT require a medium for heat transfer?
Conduction
Convection
Radiation
All require a medium
What does the specific heat capacity of a substance tell you?
The amount of heat needed to raise the temperature of 1 kg of the substance by 1°C
The amount of heat needed to melt the substance
The amount of heat needed to boil the substance
The amount of heat needed to freeze the substance
Which of the following is an application of conduction?
Cooking food in a metal pan
Heating water in a kettle
The wind blowing leaves
The Sun warming your skin
Which of the following is an application of convection?
Ironing clothes
Air conditioning cooling a room
Using a magnifying glass to focus sunlight
Touching a hot stove
A metal rod is heated at one end. Which direction does the heat flow?
From the cold end to the hot end
From the hot end to the cold end
In all directions equally
Heat does not flow in solids
Why are metals good conductors of heat?
They have free electrons that transfer energy
They are shiny
They are hard
They are heavy
If you place your hand above a candle flame, which method of heat transfer are you experiencing?
Conduction
Convection
Radiation
Insulation
Why do black surfaces become hotter than white surfaces under sunlight?
Black surfaces reflect more radiation
Black surfaces absorb more radiation
White surfaces absorb more radiation
Color does not affect heat absorption
A metal spoon is placed in a cup of hot tea. After a while, the handle of the spoon becomes warm. Which process is responsible for this?
Conduction
Convection
Radiation
Evaporation
Why does warm air rise in a room?
Warm air is heavier than cold air
Warm air is lighter than cold air
Warm air is pushed by cold air
Warm air does not move
Which of the following would increase the rate of heat transfer by conduction?
Using a thicker material
Using a material with lower thermal conductivity
Increasing the temperature difference between the ends
Decreasing the surface area
A pot of water is heated on a stove. Explain how convection currents form in the water.
The water at the top heats up and sinks
The water at the bottom heats up, becomes less dense, and rises, while cooler water sinks
The water does not move
The water evaporates immediately
If 2000 J of heat is supplied to 0.5 kg of a substance and its temperature rises by 4°C, what is its specific heat capacity? (Use c=mΔTQ )
100 J/kg°C
500 J/kg°C
1000 J/kg°C
2000 J/kg°C
Why are cooking pots often made with metal bottoms and plastic handles?
Metals are poor conductors and plastics are good conductors
Metals conduct heat to cook food, plastics insulate to protect hands
Both metals and plastics conduct heat well
Plastics are used for decoration only
