This book is part of a book series called Science Fun .

This book has been graded for interest at 8-12 years.

There are 176 pages in this book. This book was published 1999 by HarperTrophy .

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. Ying-Hwa Hu is married to Cornelius van Wright, and together they are a husband-wife illustration team. She was born in Taiwan, and now lives in New York City with her husband and two young children. Vicki Cobb is the well-known author of more than eighty-five highly entertaining nonfiction books for children.