Which statement about the Sun is correct?
The Sun’s energy is released by the nuclear fission of heavy nuclei.
The Sun is composed mainly of hydrogen and helium.
The Sun is a planet orbiting the Earth.
The Sun radiates most of its energy in the microwave region of the electromagnetic spectrum.
104 exam-style questions on CIE IGCSE Physics 6.2 Stars and the Universe, covering 6.2.1 The Sun as a star, 6.2.2a Galaxies and astronomical distances, 6.2.2b The life cycle of a star, 6.2.3a Galaxies and the scale of the Universe, 6.2.3b Redshift, 6.2.3c The Big Bang Theory and cosmic microwave background radiation, and 6.2.3d The Hubble constant and the age of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.