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Stellar evolution quick check

A quick check of 3 questions. After you submit, each question shows the right answer and why.

3 of 8 questions, Advanced level. Aimed at the Advanced level, your current depth. Questions you have not answered yet come first.

Show all 8 questions

ScientistQuestion 1 of 3

Why does the chain of fusion reactions in a massive star's core stop at iron?

ScientistQuestion 2 of 3

A young star cluster contains a white dwarf, while stars of 6 solar masses are still on its main sequence. A white dwarf can be at most about 1.4 solar masses. At least how many solar masses must the white dwarf's parent star have lost?

AdvancedQuestion 3 of 3

Stars born with up to about 8 solar masses can still end as white dwarfs, even though a white dwarf cannot exceed about 1.4 solar masses. Explain why there is no contradiction.