University of Colorado
University of Colorado: Ph Et Interactive Simulations: Color Vision
Make a whole rainbow by mixing red, green, and blue light. Change the wavelength of a monochromatic beam or filter white light. View the light as a solid beam, or see the individual photons.
NASA
Nasa: Tour of the Electromagnetic Spectrum: Visible Light
Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all...
The Tech Interactive
Tech Museum of Innovation: Common Light Sources
While reviewing various light sources, the source of colors (white, red, yellow, blue) are also discussed. The bouncing of light, the matching of colors, and seeing colors are all highlighted.
Utah Education Network
Uen: I'll Build You a Rainbow
In these three activities, students explore the colors of the spectrum in white light.
Science Education Resource Center at Carleton College
Serc: All That Glitters
This Ocean Explorer lesson plan (PDF) explores the questions: What colors, if any, are visible down in the deep sea? What is bioluminescence? Students will learn about white light (visible light), the quantity and quality of light as...
Project Britain
Primary Homework Help: Color Investigation Puzzle
Try making words on the screen disappear by changing the background color of this page. Add or subtract red, green, or blue, and see how light is made up of many different colors.
TeachEngineering
Teach Engineering: Do Different Colors Absorb Heat Better?
Students test whether the color of a material affects how much heat it absorbs. Students will place an ice cube in a box made of colored paper (one box per color; white, yellow, red and black), which they will place in the sun. The...
University Corporation for Atmospheric Research
Ucar: About Rainbows
This site from the University Corporation of Atmospheric Research provides an illustrated article about the phenomenon of rainbows.
Georgia State University
Georgia State University: Hyper Physics: Characterizing Color
This site from Georgia State University discusses the meaning of the terms hue, saturation and brightness. Thorough, meaningful explanations and outstanding graphics.
Optical Society
Optical Society of America: Optics for Kids: Spinning Your (Color) Wheels
Instructions on how to make a color wheel that spins to produce white. With links to scientific, academic articles that explain what is happening.
Optical Society
Optical Society of America: Optics for Kids: Black Is Black or Is It?
An experiment with a coffee filter and a marker to see what happens when water touches a black dot, or any other color. With links to several scientific, academic articles that explain what is happening.