This book is part of a book series called Spectrum Key Stage 3 Science .

This book is suitable for Key Stage 3. KS3 covers school years 7, 8 and 9, and ages 12-14 years. A key stage is any of the fixed stages into which the national curriculum is divided, each having its own prescribed course of study. At the end of each stage, pupils are required to complete standard assessment tasks.

There are 80 pages in this book. This book was published 2003 by Cambridge University Press .

This book has the following chapters: Introduction; Unit 8A Food and digestion; Unit 8B Respiration; Unit 8C Microbes and disease; Unit 8D Ecological relationships; Unit 8E Atoms and elements; Unit 8F Compounds and mixtures; Unit 8G Rocks and weathering; Unit 8H The rock cycle; Unit 8I Heating and cooling; Unit 8J Magnets and electromagnets; Unit 8K Light; Unit 8L Sound and hearing