Light Vocabulary The following terms are from Real World Science: Light. Match each word with its definition. Tools A B photon tiny particle of moving light energy frequency the number of light waves that pass a certain point during a given period of time transparent describes an object that transmits light, or allows light to pass through it translucent describes an object that lets some light waves pass through, but blocks others refraction the bending of light rays as they enter a new medium amplitude the height of a wave measured by the distance between the center of the wave and the crest or trough colors different frequencies of visible light; there are seven in the spectrum light energy that we can see and sometimes feel as heat opaque describes an object that reflects or absorbs all the light that strikes it electromagnetic type of wave that transfers electric energy and magnetic energy