Which statement about the energy production in the Sun is correct?
The Sun is powered by nuclear fission reactions in which hydrogen nuclei split apart.
The Sun is powered by nuclear fusion reactions in which hydrogen nuclei join together to form helium nuclei, releasing energy as electromagnetic radiation.
The Sun is powered by chemical combustion where hydrogen gas reacts with oxygen to produce water.
The Sun is powered by nuclear fusion reactions which generate mainly alpha and beta particles and no electromagnetic radiation.
20 exam-style questions on CIE IGCSE Physics 6.2.1 The Sun as a star. Each one has a worked solution and a mark scheme showing where the marks go.