Worksheets213 ppt8 Methods of Heat Transfer Quiz
Total questions: 42
Worksheet time: 21mins
Which of the following is a method by which heat can be transferred?
Evaporation
Conduction
Absorption
Reflection
What is one of the three methods of heat transfer?
Diffusion
Convection
Insulation
Compression
Radiation is a method of heat transfer. Which of the following is NOT a method of heat transfer?
Conduction
Convection
Radiation
Filtration
What is conduction in the context of heat transfer?
Heat traveling through a vacuum
Heat traveling through or along a material
Heat traveling through radiation
Heat traveling through convection
Which of the following is an example of conduction?
Heating a room with a radiator
Heating copper tube to solder
Sunlight warming the Earth
Boiling water in a pot
Which material is a good thermal conductor?
Plastic
Wood
Copper
Rubber
Which of the following materials is considered a good thermal conductor?
Wood
Copper
Polystyrene
Still air
What is a characteristic of materials that are good thermal conductors?
They are also good electrical conductors.
They are poor electrical conductors.
They are always non-metallic.
They are always lightweight.
Which material is a bad thermal conductor?
Aluminium
Iron
Still air
Glass
What can be used as an insulator due to its poor thermal conductivity?
Copper
Aluminium
Polystyrene
Iron
In which states of matter can convection occur?
Solid and liquid
Liquid and gas
Solid and gas
Plasma and solid
What happens to molecules during convection when they are heated?
They cool and fall
They remain stationary
They heat and rise
They dissolve
What is the main way a DHWC heats water?
Conduction
Radiation
Convection
Evaporation
What is the method of heat transfer that involves infrared light and transfers heat from one body to another without heating the space in between?
Conduction
Convection
Radiation
Evaporation
What are the two effects of heat on a substance?
Change in color and change in texture
Change in temperature and change in state
Change in size and change in shape
Change in density and change in volume
What happens to water when LATENT heat is applied?
It changes from gas to liquid to solid
It changes from solid to liquid to gas
It changes from liquid to solid to gas
It changes from gas to solid to liquid
What happens to ice when heat is added?
It freezes
It condenses
It melts
It sublimates
What is the process called when water turns into steam?
Freezing
Melting
Condensing
Evaporating
What happens to water in its gaseous state when heat is lost?
It evaporates
It melts
It condenses
It sublimates
What is the process called when water turns into ice?
Melting
Freezing
Evaporating
Condensing
What is sensible heat?
Heat required to change water to steam
Heat required to raise the water temperature without changing its state
Heat required to keep water boiling
Heat required to cool water
What happens when latent heat is applied to water?
The water temperature rises without changing state
The water changes from liquid to steam
The water cools down
The water freezes
Which type of heat is required to keep water boiling?
Sensible heat
Latent heat
Radiant heat
Conductive heat
What is sensible heat?
Heat that changes the temperature of a substance without changing its state
Heat that changes the state of a substance without changing its temperature
Heat that is lost to the environment
Heat that is absorbed by the surroundings
What happens to water when latent heat is applied?
It changes from liquid to gas
It changes from gas to liquid
It changes from solid to liquid
It remains in the same state
What type of heat is required to keep water boiling?
Latent heat
Sensible heat
Radiant heat
Conductive heat
What is the scientific unit for measuring temperature?
Celsius (°C)
Fahrenheit (°F)
Kelvin (K)
Rankine (°R)
Why do hot water cylinder pipes need insulating?
To increase water pressure
To prevent heat loss
To reduce water flow
To enhance water taste
Why do cold water mains pipes need to be insulated?
To prevent condensation from forming on the pipe.
To increase the water temperature.
To reduce water pressure.
To prevent rusting.
Why are white cars more common in hot countries?
White reflects the sun’s heat.
White absorbs the sun’s heat.
White is cheaper to produce.
White is more aesthetically pleasing.
What type of surfaces are needed in solar panels to absorb heat from the sun?
Shiny surfaces
Matte surfaces
Rough surfaces
Textured surfaces
What is the effect of insulating pipework?
Increases efficiency and reduces running costs.
Decreases water flow.
Increases water pressure.
Reduces water temperature.
What is the temperature at which water boils in degrees Celsius?
0°C
32°C
100°C
273°C
At what temperature in Kelvin does water freeze?
0 K
273.15 K
100 K
373.15 K
What is the equivalent of 0 Kelvin in degrees Celsius?
0°C
-100°C
-273°C
-459°C
Which of the following statements is true about Celsius and Kelvin increments?
Celsius increments are larger than Kelvin increments.
Kelvin increments are larger than Celsius increments.
Celsius and Kelvin increments are the same.
Celsius increments are smaller than Kelvin increments.
What is the amount of energy needed to heat 1 gram of water by 1°C?
1 Joule
4.18 Joules
10 Joules
100 Joules
How many joules are in 1 kilojoule?
100 Joules
500 Joules
1000 Joules
2000 Joules
What is the specific heat capacity of water used to measure?
Grams
Litres
Kilograms
Millilitres
What is the formula to calculate the heat required to raise the temperature of water?
Quantity of water (litres) x Δt x 2.18
Quantity of water (litres) x Δt x 3.18
Quantity of water (litres) x Δt x 4.18
Quantity of water (litres) x Δt x 5.18
What is the formula used to calculate the volume of water in the cylinder?
3.14 x Radius x Radius x Height
2 x Radius x Height
Radius x Height
3.14 x Height
What is the specific heat capacity (SHC) used to raise the temperature of water in the cylinder?
4.18 KJ/kg°C
3.18 KJ/kg°C
5.18 KJ/kg°C
2.18 KJ/kg°C
