Mass Extinctions in Earth History
Your child knows the asteroid that killed the dinosaurs was the fifth mass extinction. The worst one, long before, wiped out more than nine in ten of all species.
In curriculum terms
Compare the five major mass extinction events in Earth history (End-Ordovician, Late Devonian, End-Permian, End-Triassic, K-Pg), describe proposed kill mechanisms for each (glaciation, oceanic anoxia, volcanic mega-eruptions, asteroid impact), and explain why mass extinctions, while catastrophic, also open ecological space for subsequent evolutionary radiations
Ages are typical, not deadlines — follow your child’s pace. How to help at home →
How to tell they’ve got it
Tick these off as you see them — no test required.
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Try this together
Can your child explain that the asteroid that wiped out the dinosaurs was actually the fifth mass extinction in Earth history — and describe what happened in the worst one, which killed over 90% of all species?
Where this sits on the map
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Curriculum alignment
Where this fits in the official school curriculum — our best automated guess, not yet checked by a person.
This skill sits beyond Year 6 in the Australian Curriculum, so no F–6 code is matched. It also sits beyond the NSW K–6 syllabuses. It also sits beyond Level 6 in the Victorian Curriculum.