It is normal to give the wavelength of light the symbol Greek 'lambda'. As illustrated in the adjacent image, a wave has a wavelength associated with it. The quantity that is 'waving' is the electromagnetic field, an esoteric but quite measurable entity: your lights shine and your microwave runs and your radio plays because the electromagnetic field exists.The worksheet can be used as a guided inquiry lesson or as a review. This worksheet covers the topics of reflection and refraction as well as the color spectrum of light, utilizing the following exhibits at WonderWorks: two sets of carnival mirrors and a bubble station with three bubble blowing stations.