[問題] 93台南縣地科教甄考題
1、從地球上看到甲、乙、丙、丁四個恆星的明亮程度,
依序為甲>乙>丙>丁,它們的重元素(比氦重的元素)
含量百分比,依序為乙>甲>丁>丙,則甲乙丙丁四恆星
中何者的年齡最少?
(a)甲 (b)乙 (c)丙 (d)丁
答案:b
想請教要如何判斷?重元素是自行核融合產生,還是其他恆星死亡留下的?
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