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

This book is aimed at children in secondary school.

This book was published 2008 by HarperCollins Publishers .

Ed Walsh is Science Adviser in Cornwall and the Series Editor for Collins KS3 Science. He has contributed to Collins KS4 Science books supporting courses from AQA, EdExcel and OCR, and has written materials for the Secondary National Strategy. Ed was a teacher for 20 years, 12 as subject leader, and has taught in Manchester, South Wales and Cornwall. He is a regular provider of CPD events at ASE Conferences.