Explore light waves you can see with a bright LED and a CD.
A spectrum is a range of electromagnetic waves in order of their wavelength. You can always remember the order by thinking of "ROY G BIV". From longest to shortest-Red, Orange, Yellow, Green, Blue, Indigo, Violet.
As white light bends, each color in the spectrum bends at a slightly different angle because their wavelengths are different sizes. Shorter wavelengths will bend more and longer wavelengths will bend less.
Why does a CD behave like a prism? They both act as "diffraction grating." The grooves on a CD diffract light into several beams like you saw in this experiment!
You can also find this project on page 15 in the Space Kit booklet.