Which statement about convection is not correct?
It is the primary method of thermal energy transfer in solid metals.
It occurs when a fluid expands upon heating, decreasing its density and causing it to rise.
It plays a significant role in meteorological processes like wind and sea breezes.
It requires a medium and therefore cannot occur in a vacuum.
73 exam-style questions on CIE IGCSE Physics 2.3.2 Convection. Each one has a worked solution and a mark scheme showing where the marks go.