Which statement about the methods of thermal energy transfer is correct?
Conduction can occur in a vacuum if the temperature is high enough.
Convection occurs in fluids because warmer, more dense fluid rises.
Thermal radiation is the only method of thermal energy transfer that can travel through a vacuum.
Conduction is much faster in gases than in solids because gas particles move freely.
99 exam-style questions on CIE IGCSE Physics 2.3.3a Thermal radiation. Each one has a worked solution and a mark scheme showing where the marks go.