Describe the structure of a neutral atom of lithium-7, 37Li\text{}^{7}_{3}\text{Li}37Li.
The Sun is a stable main-sequence star.
State what happens to hydrogen nuclei during the primary nuclear fusion process in the Sun.
State two regions of the electromagnetic spectrum through which the Sun radiates the majority of its energy.
Describe what occurs to a star of similar mass to the Sun once the hydrogen fuel in its core is depleted.
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.