On a hot summer day, a park bench with wooden seat slats and a cast-iron frame has been left out in the sun for several hours. A person touches both parts and finds that the cast-iron frame feels much hotter to the touch than the wooden seat.
Which row in the table below correctly describes the temperature and the thermal property of the two materials?
| Temperature of the two materials | Property of the two materials | |
|---|---|---|
| A | The temperature of the iron is much higher than that of the wood | The wood is a better thermal conductor than the iron |
| B | The temperature of the iron is much higher than that of the wood | The iron is a better thermal conductor than the wood |
| C | The iron and the wood are both at the same temperature | The wood is a better thermal conductor than the iron |
| D | The iron and the wood are both at the same temperature | The iron is a better thermal conductor than the wood |
Row A
Row B
Row C
Row D
301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.