This book is part of a book series called How It Works .

This book has been graded for interest at 7-13 years.

There are 15 pages in this book. This book was published 2010 by B. E. S. Publishing .

Nicholas Harris is a prolific non-fiction writer and is the head of Orpheus Books. Dereen Taylor has been writing and editing children's books for more than fifteen years. She specializes in writing fiction and activity books for younger readers. Tim Hutchinson is an experienced artist and illustrator.