Transfer of thermal energy — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

34 An iron bar is held with one end in a fire. The other end soon becomes too hot to hold. hand fire iron bar How has the heat travelled along the iron bar? A by conduction B by convection C by expansion D by radiation

1 marks

Answer: A

This question in 0654/11 May/June 2005

32 Two plastic cups are placed one inside the other. Hot water is poured into the inner cup and a lid is put on top as shown. lid small spacer small air gap hot water bench Which statement is correct? A Heat loss by radiation is prevented by the small air gap. B No heat passes through the sides of either cup. C The bench is heated by convection from the bottom of the outer cup. D The lid is used to reduce heat loss by convection.

1 marks

Answer: D

This question in 0654/11 May/June 2006

34 Which line in the table is correct about conduction and convection? conduction convection A can happen in a solid can happen in a solid B can happen in a solid only happens in fluids C only happens in fluids can happen in a solid D only happens in fluids only happens in fluids

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2006

19 It is unusual for a hot drink to be served in a metal cup. Why is this? A Metals are usually hard. B Metals are usually strong. C Metals have high porosity. D Metals have high thermal conductivity.

1 marks

Answer: D

This question in 0654/11 May/June 2007

31 Meat can be cooked by placing it below, but not touching, a heating element. heating element meat Which process transfers thermal energy from the heating element to the meat? A conduction B convection C insulation D radiation

1 marks

Answer: D

This question in 0654/11 May/June 2007

33 A heater is placed in a room. Which diagram shows the movement of air as the room is heated? A B C D

1 marks

Answer: A

This question in 0654/11 May/June 2008

35 A white plastic lid is placed on a plastic cup used for a hot drink. lid hot drink This would have no effect on the loss of heat by A conduction. B convection. C evaporation. D radiation.

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2008

33 A rod is made up of copper and wood joined together. After the rod is heated at the join in the centre for about a minute, where would the lowest temperature be? B C A D wood copper

1 marks

Answer: A

This question in 0654/11 May/June 2009

34 A hot water tank is fitted with two identical heaters P and Q. Heater P is two thirds of the way up the tank and heater Q is at the very bottom. The tank is full of cold water. hot water out heater P cold water in heater Q When only heater Q is switched on, it takes a very long time to heat the tank of water to the required temperature of 60 °C. What happens to the tank of cold water if only heater P is switched on? A All the water reaches 60 °C in less time than before. B All the water reaches 60 °C in the same time as before. C The bottom two thirds of the water reaches 60 °C in two thirds of the original time D The top one third of the water reaches 60 °C in one third of the original time.

1 marks

Answer: D

This question in 0654/11 May/June 2009

32 A beaker contains water at room temperature. X water Y How could a convection current be set up in the water? A cool the water at X B cool the water at Y C stir the water at X D stir the water at Y

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2009

32 How is heat transferred in a vacuum? A by conduction and convection B by convection and radiation C by convection only D by radiation only

1 marks

Answer: D

This question in 0654/11 May/June 2012

33 A hot metal ball is placed in a small hollow in a piece of wood. Two thermometers are placed equal distances from the ball, one at position P and one at position Q. Q hot metal ball P wood Which thermometer gives the highest reading and why? highest reading reason A thermometer at P the air conducts heat sideways, not upwards B thermometer at P the wood conducts the heat sideways, not upwards C thermometer at Q convection carries the heat upwards, not sideways D thermometer at Q infra-red rays carry the heat upwards more than sideways

1 marks

Answer: C

This question in 0654/12 May/June 2012

33 A hot metal ball is placed in a small hollow in a piece of wood. Two thermometers are placed equal distances from the ball, one at position P and one at position Q. Q hot metal ball P wood Which thermometer gives the highest reading and why? highest reading reason A thermometer at P the air conducts heat sideways, not upwards B thermometer at P the wood conducts the heat sideways, not upwards C thermometer at Q convection carries the heat upwards, not sideways D thermometer at Q infra-red rays carry the heat upwards more than sideways

1 marks

Answer: C

This question in 0654/13 May/June 2012

33 A hot water tank is fitted with two identical heaters P and Q. Heater P is two thirds of the way up the tank and heater Q is at the very bottom. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to the required temperature of 60 °C. What happens to the tank of cold water if only heater P is switched on? A All the water reaches 60 °C in less time than before. B All the water reaches 60 °C in the same time as before. C The bottom two thirds of the water reaches 60 °C in two thirds of the original time. D The top one third of the water reaches 60 °C in one third of the original time.

1 marks

Answer: D

This question in 0654/11 May/June 2013

33 A hot water tank is fitted with two identical heaters P and Q. Heater P is two thirds of the way up the tank and heater Q is at the very bottom. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to the required temperature of 60 °C. What happens to the tank of cold water if only heater P is switched on? A All the water reaches 60 °C in less time than before. B All the water reaches 60 °C in the same time as before. C The bottom two thirds of the water reaches 60 °C in two thirds of the original time. D The top one third of the water reaches 60 °C in one third of the original time.

1 marks

Answer: D

This question in 0654/12 May/June 2013

33 A hot water tank is fitted with two identical heaters P and Q. Heater P is two thirds of the way up the tank and heater Q is at the very bottom. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to the required temperature of 60 °C. What happens to the tank of cold water if only heater P is switched on? A All the water reaches 60 °C in less time than before. B All the water reaches 60 °C in the same time as before. C The bottom two thirds of the water reaches 60 °C in two thirds of the original time. D The top one third of the water reaches 60 °C in one third of the original time.

1 marks

Answer: D

This question in 0654/13 May/June 2013

33 The diagrams show part of a water-heating system which is working by convection. Which diagram shows the flow of water in the system? A B hot hot water water tank tank boiler boiler heat heat C D hot hot water water tank tank boiler boiler heat heat

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2013

33 The diagrams show part of a water-heating system which is working by convection. Which diagram shows the flow of water in the system? A B hot hot water water tank tank boiler boiler heat heat C D hot hot water water tank tank boiler boiler heat heat

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2013

22 A cup is made of copper. Why is the cup not used for hot drinks? A Copper is a good conductor of heat. B Copper is a good electrical conductor. C Copper is brightly coloured. D Copper reacts with saliva.

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2013

33 The diagrams show part of a water-heating system which is working by convection. Which diagram shows the flow of water in the system? A B hot hot water water tank tank boiler boiler heat heat C D hot hot water water tank tank boiler boiler heat heat

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2013

33 Bread can be cooked by placing it below a heating element. heating element bread Which process transfers thermal energy from the heating element to the bread? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/11 May/June 2014

33 Bread can be cooked by placing it below a heating element. heating element bread Which process transfers thermal energy from the heating element to the bread? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/12 May/June 2014

30 A person wearing wet clothes can feel cold even on a warm day. Why does he feel cold? A Water gives out heat as it evaporates. B Water takes in heat as it evaporates. C Water vapour gives heat out as it condenses. D Water vapour takes heat in as it condenses.

1 marks

Answer: B

This question in 0654/13 May/June 2014

32 Bread can be cooked by placing it below a heating element. heating element bread Which process transfers thermal energy from the heating element to the bread? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/13 May/June 2014

31 A flask contains a hot liquid. The flask has double walls with a vacuum between them. The vacuum reduces loss of thermal energy from the hot liquid. Which types of thermal energy transfer cannot occur through the vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2014

31 A flask contains a hot liquid. The flask has double walls with a vacuum between them. The vacuum reduces loss of thermal energy from the hot liquid. Which types of thermal energy transfer cannot occur through the vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2014

32 A wide container of water is heated from below. Which diagram shows the convection current(s) in the water? A B C D heat heat heat heat

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2014

32 To keep a bottle of fruit juice cool on a hot day, it is wrapped in a cloth soaked in water. Why is this method successful? A Water has a high boiling point. B Water has a low melting point. C Water is a poor conductor of heat. D Water produces a cooling effect as it evaporates.

1 marks

Answer: D

This question in 0654/11 May/June 2015

33 There is a vacuum between the double walls of a vacuum flask. Which types of heat transfer are reduced by the vacuum? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only

1 marks

Answer: B

This question in 0654/11 May/June 2015

33 There is a vacuum between the double walls of a vacuum flask. Which types of heat transfer are reduced by the vacuum? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only

1 marks

Answer: B

This question in 0654/12 May/June 2015

33 There is a vacuum between the double walls of a vacuum flask. Which types of heat transfer are reduced by the vacuum? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only

1 marks

Answer: B

This question in 0654/13 May/June 2015

34 A teacher demonstrates convection currents using a lighted candle in a box with two chimneys. She holds a smoking taper at point P. In which direction does the convection current cause the smoke to move? B P A C chimney chimney D

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2015

34 Hot liquid in a vacuum flask cools extremely slowly. This is because some methods of heat transfer do not take place in a vacuum. Which methods do not take place in a vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2015

34 Food is kept in a loosely-packed cool-box which uses two ice packs to keep it cool. Where should the ice packs be placed to keep all the food as cool as possible? A both at the bottom of the box B both at the top of the box C one at the front and one at the back of the box D one on the left and one on the right of the box

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2015

33 Which method of thermal energy transfer can occur in a vacuum and which region of the electromagnetic spectrum is often involved in this type of thermal energy transfer? method of thermal region of the energy transfer electromagnetic spectrum A convection infra-red B convection radio waves C radiation infra-red D radiation radio waves

1 marks

Answer: C

This question in 0654/11 May/June 2016

33 A heater in a room is switched on. The room is heated by convection. Which diagram shows the convection current produced in the air? A B heater heater floor floor C D heater heater floor floor

1 marks

Answer: B

This question in 0654/12 May/June 2016

33 The diagram shows an object made of wood and of iron. Thermal energy is supplied in the position shown. Point P is marked at the bottom of the object. thermal energy wood iron P How does most thermal energy reach point P? A by conduction through the iron B by conduction through the wood C by convection through the iron D by convection through the wood

1 marks

Answer: A

This question in 0654/13 May/June 2016

33 How is thermal energy transferred in a vacuum? A by conduction and convection B by convection and radiation C by convection only D by radiation only

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2016

33 How is thermal energy transferred in a vacuum? A by conduction and convection B by convection and radiation C by convection only D by radiation only

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2016

32 How is thermal energy transferred in a vacuum? A by conduction and convection B by convection and radiation C by convection only D by radiation only

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2016

32 Bread can be cooked by placing it below a heating element. heating element bread Which process transfers thermal energy from the heating element to the bread? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/11 May/June 2017

32 Bread can be cooked by placing it below a heating element. heating element bread Which process transfers thermal energy from the heating element to the bread? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/12 May/June 2017

32 Bread can be cooked by placing it below a heating element. heating element bread Which process transfers thermal energy from the heating element to the bread? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/13 May/June 2017

33 A boy sits near a campfire. He holds an iron bar with one end in the fire. His hand becomes hot. iron bar In which ways does thermal energy (heat) from the fire reach his hand? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2017

32 A convector heater is fixed to a wall. Which diagram shows how warm air near the heater moves because of convection in the air? A B wall wall heater heater warm air warm air floor floor C D wall warm wall air warm air heater heater floor floor

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2017

33 One type of double glazing consists of two panes of glass separated by a vacuum. glass glass vacuum Which methods of energy transfer are prevented by the vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2017

34 There is a vacuum between the double walls of a vacuum flask. Which types of heat transfer are reduced by the vacuum? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2018

33 There is a vacuum between the double walls of a vacuum flask. Which types of heat transfer are reduced by the vacuum? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2018

33 There is a vacuum between the double walls of a vacuum flask. Which types of heat transfer are reduced by the vacuum? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2018

31 Which region of the electromagnetic spectrum is often involved in heat transfer by radiation? A infra-red B radio C ultraviolet D X-ray

1 marks

Answer: A

This question in 0654/11 May/June 2019

34 Which material is a good thermal conductor? A aluminium B cardboard C rubber D wool

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2019

33 A room is heated using an electric heater placed on the floor. What is the name of the process by which the heated air moves around the room? A conduction B convection C evaporation D radiation

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2019

31 The diagram shows a shaped glass tube filled with water. When the water is heated at the point shown, the water begins to move round the tube. glass tube water heat What is the main method of heat transfer that is occurring within the water and in which direction does the water move? method of direction of heat transfer movement A conduction anticlockwise B conduction clockwise C convection anticlockwise D convection clockwise

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2019

33 A hot water tank is fitted with two identical heaters P and Q. Heater P is fitted above heater Q as shown. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to 60 °C. What happens to the cold water when only heater P is switched on? A All the water reaches 60 °C in less time. B All the water reaches 60 °C in the same time. C The water below heater P reaches 60 °C in less time. D The water above heater P reaches 60 °C in less time.

1 marks

Answer: D

This question in 0654/11 May/June 2020

32 A hot water tank is fitted with two identical heaters P and Q. Heater P is fitted above heater Q as shown. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to 60 °C. What happens to the cold water when only heater P is switched on? A All the water reaches 60 °C in less time. B All the water reaches 60 °C in the same time. C The water below heater P reaches 60 °C in less time. D The water above heater P reaches 60 °C in less time.

1 marks

Answer: D

This question in 0654/12 May/June 2020

31 A hot water tank is fitted with two identical heaters P and Q. Heater P is fitted above heater Q as shown. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to 60 °C. What happens to the cold water when only heater P is switched on? A All the water reaches 60 °C in less time. B All the water reaches 60 °C in the same time. C The water below heater P reaches 60 °C in less time. D The water above heater P reaches 60 °C in less time.

1 marks

Answer: D

This question in 0654/13 May/June 2020

31 Which material is a bad thermal conductor? A aluminium B brass C copper D wood

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2020

31 An electric kettle is switched on and the temperature of the water in it increases to 60 C. What is the main method of heat transfer within the water? A boiling B conduction C convection D radiation

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2020

32 Which part of the electromagnetic spectrum is involved in thermal energy transfer by radiation? A infrared B radio C ultraviolet D X-rays

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2020

33 There is a vacuum in the space between the Sun and the Earth. How is thermal energy transferred from the Sun to the Earth? A by conduction only B by convection only C by radiation only D by convection and radiation only

1 marks

Answer: C

This question in 0654/12 Feb/March 2021

33 Which row shows a good thermal conductor and a bad thermal conductor? good conductor bad conductor A copper air B copper silver C water air D water silver

1 marks

Answer: A

This question in 0654/11 May/June 2021

32 There is a vacuum between the double walls of a vacuum flask. Which of the methods of thermal energy transfer are prevented by the vacuum? A conduction only B conduction and convection C convection only D radiation only

1 marks

Answer: B

This question in 0654/12 May/June 2021

32 There is a vacuum between the double walls of a vacuum flask. Which of the methods of thermal energy transfer are prevented by the vacuum? A conduction only B conduction and convection C convection only D radiation only

1 marks

Answer: B

This question in 0654/13 May/June 2021

33 Water in a metal pan is heated on a gas burner. What are the main methods by which heat is transferred through the metal pan to the water and throughout the water? A conduction through the metal pan and convection in the water B convection through the metal pan and conduction in the water C convection through the metal pan and radiation in the water D radiation through the metal pan and conduction in the water

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2021

33 Four rods have the same dimensions. They are made of four different metals and are all at room temperature. All the rods are heated equally at one end for the same length of time. The final temperature of the other end of each rod is shown in the table. Which rod is the worst conductor of heat? final temperature / °C A 50 B 62 C 70 D 82

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2021

33 The diagram shows an object made partly of wood and partly of iron. Thermal energy is supplied in the position shown. Point P is marked at the bottom of the object. thermal energy wood iron P How does most thermal energy reach point P? A by conduction through the iron B by conduction through the wood C by convection through the iron D by convection through the wood

1 marks

Answer: A

This question in 0654/12 Feb/March 2022

33 A hot metal ball is placed in a small hollow in a piece of wood. Two thermometers are placed equal distances from the ball, one at position P and one at position Q. Q hot metal ball P wood Which thermometer gives the higher reading and why? higher reading reason A thermometer at P the air conducts heat sideways, not upwards B thermometer at P the wood conducts heat sideways, not upwards C thermometer at Q convection carries heat upwards, not sideways D thermometer at Q infrared rays always carry heat upwards, not sideways

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2022

33 A hot metal ball is placed in a small hollow in a piece of wood. Two thermometers are placed equal distances from the ball, one at position P and one at position Q. Q hot metal ball P wood Which thermometer gives the higher reading and why? higher reading reason A thermometer at P the air conducts heat sideways, not upwards B thermometer at P the wood conducts heat sideways, not upwards C thermometer at Q convection carries heat upwards, not sideways D thermometer at Q infrared rays always carry heat upwards, not sideways

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2022

33 A hot metal ball is placed in a small hollow in a piece of wood. Two thermometers are placed equal distances from the ball, one at position P and one at position Q. Q hot metal ball P wood Which thermometer gives the higher reading and why? higher reading reason A thermometer at P the air conducts heat sideways, not upwards B thermometer at P the wood conducts heat sideways, not upwards C thermometer at Q convection carries heat upwards, not sideways D thermometer at Q infrared rays always carry heat upwards, not sideways

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2022

33 A hot water tank is fitted with two identical heaters P and Q. Heater P is fitted above heater Q, as shown. The tank is full of cold water. heater P heater Q When only heater Q is switched on, it takes a long time to heat the tank of water to 60 C. What happens to the cold water when only heater P is switched on? A All the water reaches 60 C in less time. B All the water reaches 60 C in the same time. C The water below heater P reaches 60 C in less time. D The water above heater P reaches 60 C in less time.

1 marks

Answer: D

This question in 0654/12 Feb/March 2023

32 Two methods of cooking are grilling under a red-hot heater and frying in a shallow metal pan. heater food shallow metal pan air food method 1: grilling method 2: frying How does thermal energy pass through the air to reach the food in method 1 and how does thermal energy pass through the bottom of the metal pan in method 2? method 1 method 2 A convection conduction B convection radiation C radiation conduction D radiation radiation

1 marks

Answer: C

This question in 0654/12 May/June 2023

32 Two methods of cooking are grilling under a red-hot heater and frying in a shallow metal pan. heater food shallow metal pan air food method 1: grilling method 2: frying How does thermal energy pass through the air to reach the food in method 1 and how does thermal energy pass through the bottom of the metal pan in method 2? method 1 method 2 A convection conduction B convection radiation C radiation conduction D radiation radiation

1 marks

Answer: C

This question in 0654/13 May/June 2023

33 How is thermal energy transferred from the Sun through the vacuum of space? A by conduction and convection B by convection and radiation C by convection only D by radiation only

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2023

32 In which of the three states of matter is convection the main method of thermal energy transfer? A liquids and gases B liquids only C solids and liquids D solids only

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2023

33 A beaker contains water that is all at 20 C. A convection current is started in the water, as shown in the diagram. Four points are labelled W, X, Y and Z. W X water Z Y Which two actions can each, on their own, cause this convection current? A cooling the water at W or heating the water at Y B cooling the water at W or heating the water at Z C cooling the water at X or heating the water at Y D cooling the water at X or heating the water at Z

1 marks

Answer: D

This question in 0654/11 May/June 2024

32 Which material is a poor thermal conductor? A air B aluminium C copper D iron

1 marks

Answer: A

This question in 0654/11 Oct/Nov 2024

33 The diagrams show part of a water-heating system which is working by convection. Which diagram shows the flow of water in the system? A B hot hot water water tank tank boiler boiler heat heat C D hot hot water water tank tank boiler boiler heat heat

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2024

33 The diagrams show part of a water-heating system which is working by convection. Which diagram shows the flow of water in the system? A B hot hot water water tank tank boiler boiler heat heat C D hot hot water water tank tank boiler boiler heat heat

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2024

31 Which row shows a good thermal conductor and a bad thermal conductor? good conductor bad conductor A copper air B copper silver C water air D water silver

1 marks

Answer: A

This question in 0654/12 Feb/March 2025

32 In which situation is convection the main method of thermal energy transfer? A heat from a heater on the floor of a room spreading around the room B heat from a hot furnace reaching a factory worker standing beside it C heat from the hot end of a metal spoon reaching a cook’s hand holding the other end D heat from the Sun reaching a worker in a field

1 marks

Answer: A

This question in 0654/12 Feb/March 2025

31 Which statement about the transfer of thermal energy is correct? A Thermal energy transfer by radiation involves mainly ultraviolet radiation. B Thermal energy transfer by radiation requires a medium to travel through. C The main method of thermal energy transfer through gases is conduction. D The main method of thermal energy transfer through liquids is convection.

1 marks

Answer: D

This question in 0654/11 May/June 2025

32 Which pair consists of one good thermal conductor and one bad thermal conductor? A aluminium and wood B brass and copper C glass and plastic D iron and steel

1 marks

Answer: A

This question in 0654/11 May/June 2025

32 The diagram shows a type of double glazing in a window. The double glazing consists of two sheets of glass separated by a vacuum. glass glass vacuum Which methods of energy transfer are prevented by the vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: A

This question in 0654/12 May/June 2025

32 The diagram shows a type of double glazing in a window. The double glazing consists of two sheets of glass separated by a vacuum. glass glass vacuum Which methods of energy transfer are prevented by the vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation

1 marks

Answer: A

This question in 0654/13 May/June 2025

32 What is a method for the transfer of thermal energy through a vacuum? A conduction B convection C insulation D radiation

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2025

32 What is the method of thermal energy transfer from the Sun to the Earth through the vacuum of space? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/12 Oct/Nov 2025

32 What is the method of thermal energy transfer from the Sun to the Earth through the vacuum of space? A conduction B convection C evaporation D radiation

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2025