This activity (aka "snack") provides instructions for using a flashlight and aquarium (or other container of water) to explain why the sky is blue and sunsets are red.
This activity (aka "snack") provides instructions for monitoring temperature changes using a postcard containing temperature-sensitive liquid crystals. By observing color changes in the liquid crystal...
This activity (aka "snack") provides instructions for modelling the scattering of sunlight by the atmosphere using gluesticks and a flashlight. The scattering of sunlight explains why the sky is blue...
Created in 2000 to mark a time of intense solar activity, this Web site offers photos, videos, and articles that illuminate sunspots, solar flares, and solar max (maximum), which means the time of greatest...
This activity (aka "snack") provides instructions for making rainbow-colored interference patterns by trapping a thin layer of air between two pieces of Plexiglas(tm).
This activity (aka "snack") provides instructions for using a diffraction grating to observe the color spectrum of sunlight. You can also compare spectra from other light sources.