Learn the seven colors of the rainbow in order and what each of them symbolizes. Includes a helpful mnemonic.

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...

Students review and conclude our color unit. Students graph their favorite colors.

Students investigate the properties of visible light and the sequence of colors in the spectrum using light shone through water and prisms. The lesson and accompanying slideshow can both be downloaded.

Rainbows and sunsets are called "atmospheric optics". They can be caused by light being absorbed, reflected, scattered, refracted, or diffracted by particles in the atmosphere. Learn all about different atmospheric optics along with...