The table describes two stages in the life of a star of similar mass to the Sun.
| Stage | Description |
|---|---|
| P | Hydrogen fusion in the core maintains a stable size |
| Q | The outer layers have expanded and the surface is cooler |
Which statement gives the order of these stages and a later stage?
Q occurs before P; a white dwarf forms later.
P occurs before Q; a white dwarf forms later.
Q occurs before P; a neutron star forms later.
P occurs before Q; a neutron star forms later.
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.