About this worksheet
One ancient sea creature becomes a fossil in this three-page Year 6 cloze, which has an answer key. Pupils use each of twelve words once, from seabed and decompose to erosion and palaeontologists. The passage covers sediment, layers, pressure and minerals, and the millions of years the process takes. A picture shows rock layers with an ammonite and a bone inside them. Two questions follow. One asks why hard parts fossilise better than soft parts, and the other asks how fossils show that living things have changed. It is written for the England National Curriculum unit on evolution and inheritance.
