Robert Gardner 
Energy Experiments Using Ice Cubes, Springs, Magnets, and More [PDF ebook] 
One Hour or Less Science Experiments

No energy to spare? This book is here to help. Readers will discover how cool temperatures help to keep a taiga wet, and the relationship between a taiga animal’s wide feet and pressure. Each experiment follows the scientific method, and can be completed in an hour or less. Many experiments also include ideas for more detailed science fair projects.