-What is light made of?
-How does light travel?
-What makes light?
-Where does light come from?
-At this point, most students will begin to name lamps, electricity, and batteries as sources of light. When they do, introduce the glowing tomato.
-If light comes from electricity/batteries/etc., where is the light coming from here?
-Begin powerpoint presentation on light, including what it is composed of, how fast it travels, and the electromagnetic spectrum.
-Give students structured note sheet so that they may follow along with the lecture and fill in empty spaces with appropriate information.