This book is part of a book series called Lets-Read-And-Find-Out Science .

This book is aimed at children in university.

There are 30 pages in this book. This book was published 2000 by HarperCollins Publishers Inc .

True Kelley has illustrated many favorite books for children in her fun-filled watercolor style, including several in the Let's-Read-and-Find-Out Science series. She and the author previously collaborated on What Makes a Magnet? and What the Moon is Like? True Kelley lives in Warner, New Hampshire.