Reflection Energy waves bouncing off the surface of an object (such as mirrors or echoes) Illuminate To light up Refraction Energy waves that bend (change direction and speed) as they pass from one type of object to another Light spectrum The small part of the electromagnetic spectrum that the human eye can see: violet, blue, cyan, green, yellow, orange and red Lens A piece of curved glass or plastic that bends passing light to focus or spread the light rays Magnify Increase in size, power or importance Mirror Any object that has a reflective surface Kaleidoscope A tube that contains 3 mirrors that reflect many different designs of light passing through a colored disk on top