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Identify Rocks with Fossils in Them

In this worksheet, students will answer questions on the formation of fossils from living things that have died and are trapped in rock.

'Identify Rocks with Fossils in Them' worksheet

Key stage:  KS 2

Year:  Year 3 Science worksheets

Curriculum topic:   Rocks

Curriculum subtopic:   Fossils

Difficulty level:  

Worksheet Overview

A fossil is formed when a prehistoric animal or plant dies and its remains become trapped in soft rock.




This often happened in the mud and sand beneath the ancient seas.

Rivers bring silt and sand from the land. When these meet the sea, this sediment settles to the sea floor.




As the sand or silt settled on top of the dead organism, the rocks then formed around the remains of the animal or plant which was then preserved inside the rock.

So, the dead organism left its imprint in the rock.


Fossil plant


Strictly speaking, a fossil has to be at least 10,000 years old - in fact, almost all of them are millions of years old.

Anything less than 10,000 years old is considered by palaeontologists (the scientists who study fossils) to be young!


So, are you ready to learn all about old fossils?


boy throwing leaves


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