Science
Earth's Systems
Conceptual
7–8 yrs
How fossils form
化石的形成过程
Description
Describe in simple terms how fossils are formed when things that have lived are trapped within rock over millions of years
Mastery Evidence
- Describe the basic process: organism dies, gets buried in mud/sand, layers build up, material turns to rock over millions of years
- Explain that the organism's shape is preserved as a fossil within the rock
- Give examples of common fossils (shells, bones, leaf imprints, footprints)
Assessment Prompt
Can your child explain how a shell or bone from an ancient creature ended up preserved inside a rock?
