Science Snacks A-ZScience Snacks A-Z A Little AtmosphereStrips of plastic on a globe model our atmosphere. A Splash of ColorIs pure water colorless? AfterimageA flash of light leaves a lingering image. AfterimagesInvestigate how to predict the color of an afterimage. Agar Cell Diffusion Aluminum-Air BatteryConstruct a simple battery that can power a light. Load More