Janice VanCleave's Energy for Every Kid: Easy Activities That Make Learning Science Fun by Janice VanCleave
English | 2006 | 240 Pages | ISBN: 047133099X | PDF | 2,5 MB
• How do plants make their own food?
• Why do the different strings on a guitar have different sounds?
• What does the color of a star tell you about how hot the star is?
• What's the difference between gamma rays, X-rays, and microwaves?