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Understanding Light: Its Sources and Energy Transformations

In this lesson, we explore the fundamental question, "What do you think light is and is not?" We investigate the origins of light in our classroom, including flashlights, the sun, LEDs, and more. Students will learn about the eight parts of a flashlight and discover how chemical energy from batteries is converted into kinetic energy to power a motor, which then transforms into light energy via the filament. This discussion culminates in understanding that light is a form of energy resulting from various transformations.

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Understanding Light: Its Sources and Energy Transformations

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  1. Where Does Light Come From? Lesson 2

  2. What do you think Light is?

  3. What do you think Light is Not?

  4. Where does the light in the classroom come from?

  5. 8 parts of a flashlight

  6. Evidence that Light is a form of energy Monarch Caterpillar Monarch Chrysalis Monarch Butterfly In both cases all three examples are the same thing, just in a different form. Chemical Energy (Batteries) Kinetic Energy (Motor) Light Energy (Filament)

  7. Yes light comes from flashlights, the sun, LED’s, glow sticks, lightning bugs, etc. but. . . Light is made of a result of energy transformations. For example, in the light bulb of the flashlight, electrical energy (in the wires) was transformed into light energy (in the filament). Big Idea:

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