A container is designed with a vacuum layer between its inner and outer walls to minimize thermal energy transfer. Which method(s) of thermal energy transfer can still travel through this vacuum layer?
Conduction only
Convection only
Radiation only
Conduction and convection only
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.