Published by: Maria (Karma: 3098.81) on 4 September 2010 | Views: 3282
23
103 projects demonstrate composition of objects, how substances are affected by various forms of energy—heat, light, sound, electricity, mechanical energy, etc. How a thermometer measures heat, how an electric bulb emits light, how shadows are formed, how to make a periscope, how to make a rainbow, etc.