Two massive stars each undergo a supernova explosion. Which property of the remaining core most directly affects whether a neutron star or a black hole forms?
the distance of the core from Earth
the speed of the core through space
the age of the core when observed
the mass of the core after the explosion
75 exam-style questions on Edexcel GCSE Physics 7.3 Stars, covering 7.3.1 Evolution of stars similar to the Sun, 7.3.2 Evolution of massive stars, and 7.3.3 Observing the Universe. Each one has a worked solution and a mark scheme showing where the marks go.