K-Pg灭绝事件
The K-Pg Extinction Event
描述大约6600万年前发生的白垩纪-古近纪（K-Pg）灭绝事件，包括小行星撞击理论及其证据（如铱层和希克苏鲁伯陨石坑），并理解这一事件终结了非鸟类恐龙的时代。
Describe the Cretaceous–Palaeogene (K-Pg) extinction event approximately 66 million years ago, including the asteroid impact theory and its evidence (iridium layer, Chicxulub crater), and understand that this ended the reign of non-avian dinosaurs
学习证据 / Evidence
- 说明K-Pg灭绝事件发生在大约6600万年前，并导致了非鸟类恐龙灭绝。
- 描述小行星撞击假说，并指出墨西哥的希克苏鲁伯陨石坑。
- 解释一个证据：当时全球岩石中发现的富含铱的层。
- State that the K-Pg extinction happened about 66 million years ago and wiped out non-avian dinosaurs
- Describe the asteroid impact hypothesis and name the Chicxulub crater in Mexico
- Explain one piece of evidence: the iridium-rich layer found worldwide in rocks from that time
评估问题 / Assessment
{{name}}能解释科学家认为恐龙灭绝的原因，并至少说出一个支持小行星撞击理论的证据吗？
Can {{name}} explain what scientists think caused the dinosaurs to go extinct — and describe at least one piece of evidence for the asteroid theory?