A researcher compares four computer simulations of the final changes from a red giant to a white dwarf.
| Simulation | Behaviour of the outer layers | How the remaining core continues to shine |
|---|---|---|
| A | They drift gently away into space. | Energy is released by helium fusion. |
| B | They are blasted outwards in a sudden explosion. | Energy stored during earlier stages is released. |
| C | They are blasted outwards in a sudden explosion. | Energy is released by helium fusion. |
| D | They drift gently away into space. | Energy stored during earlier stages is released. |
Which simulation models both changes correctly?
Simulation C
Simulation B
Simulation A
Simulation D
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.