Complete the sentences about the life cycle of stars.
High-mass stars begin their lives in large clouds of gas and dust called ...................................................\text{...................................................}...................................................
During the stable main sequence phase, the inward force of ...................................................\text{...................................................}................................................... is balanced by the outward ...................................................\text{...................................................}...................................................
Towards the end of its life, a star much more massive than the Sun expands and cools to become a ...................................................\text{...................................................}...................................................
When a high-mass star's core ceases fusion and collapses, it undergoes a massive explosion called a ...................................................\text{...................................................}..................................................., leaving behind a neutron star or a black hole.
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.