Convection: past paper questions
Real questions on convection
The newest 20 of 23 written questions. Open one to see it on the real paper.
- 0625/32 · May/June 2026 · Q5b[3]
Explain why the hot water is at the top of the tank. Use your ideas about the density of water.
See it on the paper → - 0625/33 · May/June 2026 · Q5b[3]
Explain why the hot water is at the top of the tank. Use your ideas about the density of water.
See it on the paper → - 0625/32 · May/June 2025 · Q6b[4]
A student demonstrates convection in a liquid. The student has a water supply and the following equipment: a candle, a glass beaker, a tripod and some coloured crystals. The coloured crystals dissolve in warm water. glass beaker tripod coloured crystals candle Fig. 6.2 Describe how the student can demonstrate convectio...
See it on the paper → - 0625/33 · May/June 2025 · Q6b[4]
A student demonstrates convection in a liquid. The student has a water supply and the following equipment: a candle, a glass beaker, a tripod and some coloured crystals. The coloured crystals dissolve in warm water. glass beaker tripod coloured crystals candle Fig. 6.2 Describe how the student can demonstrate convectio...
See it on the paper → - 0625/41 · May/June 2025 · Q4a(i)[1]
State the main method of thermal energy transfer throughout the air in the room.
See it on the paper → - 0625/41 · May/June 2025 · Q4a(ii)[3]
Explain how the heater warms all the air in the room.
See it on the paper → - 0625/32 · February/March 2025 · Q6c[3]
Describe how thermal energy spreads throughout the water.
See it on the paper → - 0625/12 · October/November 2024 · Q14[1]
Why are the cables not tightened to make them higher above the ground?
See it on the paper → - 0625/33 · May/June 2024 · Q5a[3]
Explain why the hot water is available at the top of the container. Use ideas about density.
See it on the paper → - 0625/21 · October/November 2023 · Q14[1]
Why does this help to reduce the temperature of the milk?
See it on the paper → - 0625/22 · October/November 2023 · Q16[1]
Which diagram and reason explain the heating of the room by convection?
See it on the paper → - 0625/63 · October/November 2023 · Q2c[1]
The student repeats the process for water at a higher temperature θ 2 in beaker B. His readings are shown in Table 2.1. Table 2.1 beaker A in cold water beaker A in warm water θ 1 = °C 48 θ 2 = °C t / s θ A / °C θ A / °C 0 78.5 80.0 30 72.5 77.0 60 69.0 74.5 90 66.5 73.0 120 65.0 71.5 150 63.5 70.5 180 62.0 70.0 Write...
See it on the paper → - 0625/63 · October/November 2023 · Q2d[2]
Calculate the average cooling rate R for beaker A cooling in cold water. Use the readings for beaker A from Table 2.1 and the equation θ A0 – θ A180 R = T where T = 180 s and θ A0 and θ A180 are the temperatures of the water in beaker A at t = 0 and t = 180 s. Include the unit for the cooling rate. R =
See it on the paper → - 0625/63 · October/November 2023 · Q2e[2]
Another student repeats this experiment at the same room temperature. State two other variables that she controls in order to obtain readings as close as possible to the readings in Table 2.1.
See it on the paper → - 0625/63 · October/November 2023 · Q2f(i)[1]
State the reason why this can affect the results of the investigation and suggest what effect it has on the value of cooling rate R. reason effect on R
See it on the paper → - 0625/63 · October/November 2023 · Q2f(ii)[1]
Suggest one change to the experiment to reduce the effect in (f)(i).
See it on the paper → - 0625/32 · February/March 2022 · Q7b[3]
A metal can contains some water. The metal can is heated as shown in Fig. 7.1. water movement of water metal can heat Fig. 7.1 Describe how thermal energy causes the movement of water shown in Fig. 7.1.
See it on the paper → - 0625/12 · May/June 2019 · Q19[1]
What happens to the cool air outside the kettle when it comes into contact with the hot kettle?
See it on the paper → - 0625/21 · May/June 2019 · Q18[1]
What happens to the cool air outside the kettle when it comes into contact with the hot kettle?
See it on the paper → - 0625/33 · May/June 2019 · Q6a(iii)[1]
Thermal energy is transferred throughout the water by
See it on the paper →
What examiners said
Most candidates recognised the equipment and gained partial credit for recalling standard procedures. Generally, candidates were unfamiliar with this demonstration/experiment. A description of the crystals dissolving in warm water was common.
— Examiner report, May/June 2025, 0625/32 Q6(b) (Cambridge)
Most candidates recognised the equipment and gained partial credit for recalling standard procedures. Generally, candidates were unfamiliar with this demonstration/experiment. A description of the crystals dissolving in warm water was common.
— Examiner report, May/June 2025, 0625/33 Q6(b) (Cambridge)
Almost all candidates correctly stated that the main method of thermal energy transfer through air is convection. Any additional response here was a contradiction to the correct answer.
— Examiner report, May/June 2025, 0625/41 Q4(a)(i) (Cambridge)
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