How Fossils Form
Explain in simple terms how fossils form: an organism dies and is quickly buried in sediment; over millions of years minerals replace the remains and the sediment turns to rock, preserving the shape
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How Fossils Form means explaining the basic idea of how fossils can form. We will practise once together, then check a fresh example.
Spend about 12 minutes on How Fossils Form, then checking one fresh example.
Practise the bounded task in How Fossils Form; see exact limits before inferring broader coverage.
Practise the bounded task in How Fossils Form; see exact limits before inferring broader coverage.
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Start practiceHow Fossils Form practice
Order how fossils can form.
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Learning resources
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Natural History Museum · Practice link — not the full lesson
How are fossils formed?
Before you open · source notes
How are fossils formed? supports How Fossils Form. An adult previews and guides; this is a learning page, not a scored quiz.
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Before you openAsk the learner one fact they learned and one question they still have.
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Source, access and review notes
Public Natural History Museum page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
Natural History Museum. “How are fossils formed?.” External page; Gakuva does not copy, host, embed, or redistribute materials.
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Check understanding
- Describe the basic sequence: organism dies, buried in sediment, minerals replace remains over time
- Explain why fossilisation is rare — most organisms decompose before being buried
- Use the words 'sediment', 'minerals', and 'rock' correctly when explaining
“If your child made a salt-dough fossil at school, could they explain how real fossils form underground over millions of years?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Dinosaurs & Paleontology
- Age range
- Ages 7–9