Kids learn about the science of the light spectrum. Wavelengths and frequencies of the electromagnetic waves including visible light, primary colors, and subtractive colors.

This video segment adapted from FRONTLINE introduces the electromagnetic spectrum and explains how the various types of electromagnetic waves are distinguished by the amount of energy each wave carries.

NASA site provides information on waves, electromagnetic waves and their wavelengths.

This site from the University Corporation of Atmospheric Research provides an illustrated article about the phenomenon of rainbows.

York University provides an index page to several other pages on the topic of color and color vision. The pages are part of an online "book." Many graphics and explanations.

This Imagine the Universe site provides an introduction into the multiwavelength universe and astronomy. Site provides graphics, links to a quiz, facts on this topic as well as teacher resources.