A student places two identical metal cans in direct sunlight. One can is painted matt black. The other can is shiny silver. Each can contains the same mass of water.
The Table shows her results.
Table
| Time in minutes | Temperature of water in black can in ∘C^\circ\text{C}∘C | Temperature of water in silver can in ∘C^\circ\text{C}∘C |
|---|---|---|
| 0 | 20 | 20 |
| 10 | 28 | 23 |
| 20 | 33 | 25 |
| 30 | 35 | 26 |
| 40 | 36 | 26 |
| 50 | 36 | 26 |
Describe how the temperature of the water in the black can changes during the 50 minutes.
Explain why the temperature of the water in each can eventually stops rising.
Explain why the final temperature of the water in the black can is higher than in the silver can.
50 exam-style questions on OCR GCSE Physics 8.3 Beyond Earth, covering 8.3.1 Red-shift and the expanding universe, 8.3.2 Evidence for the Big Bang model, 8.3.3 Formation of the Sun and stellar equilibrium, 8.3.4 Radiation emitted by hot bodies, 8.3.5 The solar system and satellites, 8.3.6 Gravity and circular orbits, 8.3.7 Orbital radius and orbital speed, 8.3.8 Radiation balance and the temperature of the Earth, and 8.3.9 Seismic waves and exploring hidden structures. Each one has a worked solution and a mark scheme showing where the marks go.