Compared to the Sun, older stars contain what proportion of elements heavier than hydrogen and helium?
A) a higher proportion
B) exactly the same proportion
C) they contain absolutely no heavy elements at all
D) a lower proportion

Question

Quizplus · Accepted Answer

Older stars have had more time to burn through their hydrogen and helium, leaving behind heavier elements. Therefore, older stars contain a lower proportion of elements heavier than hydrogen and helium compared to the Sun.

Compared to the Sun, Older Stars Contain What Proportion of Elements