This book is part of a book series called Questions And Answers .

There are 40 pages in this book. This book was published by Kingfisher .

Professor Charles Taylor received the U. K. 's Bragg Medal and Prize of Institutional Physics, and the UK's Michael Faraday Award for contributions to the public understanding of science. He has presented lectures on BBC television and has written many science books for children. Wendy Madgwick is the author of several science books for children.