• 6-8: 4F/M5. Human eyes respond to only a narrow range of wavelengths of electromagnetic waves-visible light. Differences of wavelength within that range are perceived as differences of color.

• 4F (9-12) #3.  Accelerating electric charges produce electromagnetic waves around them. A great variety of radiations are electromagnetic waves: radio waves, microwaves, radiant heat, visible light, ultraviolet radiation, x rays, and gamma rays. These wavelengths vary from radio waves, the longest, to gamma rays, the shortest. In empty space, all electromagnetic waves move at the same speed?the "speed of light."

A great resource to introduce beginners to the idea of light as part of a much larger spectrum of electromagnetic radiation.  Students work at their own pace to learn about all 7 sections of the Spectrum, from long-wavelength radio waves through the mysterious short-wavelength gamma rays.  They will see for themselves that visible light is only a small part of the whole.

• Physical Sciences K-8 Electromagnetic Radiation and the Spectrum Unit
• Physics First Electromagnetic Radiation and the Spectrum Unit
• Conceptual Physics Electromagnetic Radiation and the Spectrum Unit