A wooden spoon is left resting in a pot of hot soup. Over time, the handle of the spoon becomes warmer.
Which statement explains this?
Molecules of the wood radiate their energy to other molecules.
Molecules of the wood vibrate more and pass on their energy to neighboring molecules.
Free electrons in the wood transfer the thermal energy along the spoon.
The heated molecules very slowly move along the wooden spoon.
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.