Are there more particles in the air outside a building or inside a building? What is the best way to clean oil off feathers? How does soil erosion affect plant growth and food supply? Can the force in wind be used to generate electricity?
Why is the sky blue? How can you make a cloud? Can you find direction from the stars in the sky? The exciting experiments in this book will unlock the secrets of Earth's sky. Some will even give you ideas for your own science fair project.
From the everyday phenomena of wind and clouds to the awesome, destructive power of lightning, tornados, and hurricanes, young scientists can explore weather in detail with this fascinating science activity book.
This fantastic color collection presents more than 20 great experiments, broken into exciting topics such as blood and guts, eyewitness accounts, and physical evidence. Use actual CSI techniques: lift fingerprints, extract DNA, record skid marks, and see what a few key clues can reveal about a crime.
Environmental science fair projects using water, feathers, sunlight, balloons, and more by 
Stellar Science Projects about Earth's Sky by 
Weather Projects for Young Scientists by 
Crime Scene Science Fair Projects by 
