What this practice covers
These questions are drawn from past CIE 0625 Physics papers and filtered to stars and the universe. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on stars and the universe, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying a light-year is a unit of time.
- Saying redshift means galaxies are moving towards us.
- Concluding from redshift that the Earth is at the centre of the Universe.
- Giving the same life cycle for all stars regardless of mass.
- Saying a star the size of the Sun will become a black hole.
- Saying the Sun is bigger or brighter than other stars, rather than closer.
- Saying stars burn their fuel; the process is nuclear fusion, not combustion.
- Naming redshift as the only evidence for the Big Bang and omitting the microwave background.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Stars and the Universe revision notes.