Lesson Plan - Get It!
Do you know what kind of energy comes from the sun? What color is a rainbow? How are they related to each other?
The sun produces light and heat.
Light and heat are both forms of energy. Energy is another way to describe the ability to make things happen and work. We need heat and light energy from the sun to survive. In this lesson, you will be exploring light energy.
There are natural sources of light and man-made sources of light.
- Natural sources of light naturally occur in space or on Earth.
- Man-made sources of light are created by people.
The Earth gets light energy from the sun. The sun is a star that gives off natural light. It takes about eight minutes for the sun's light to reach Earth. The stars in the night sky also give off natural light. They do not give off as much light as the sun because they are farther away from Earth. Some stars are too small to give off heat.
Another natural source of light is fire.
Lamps, streetlights, lasers, strobe lights, and neon lights are all man-made lights.
Light travels in a straight line. Think about the white lights in your home. Did you know white light is a mix of every color in the rainbow? If you were to take white light and shine it through a prism like the one below, all the colors of the rainbow would be shown on the other side:
Image [cropped] by Suidroot, via Wikimedia Commons, is licensed under the CC BY-SA 2.5 Generic license.
Did you learn a lot reading about light energy? Tell your parent or teacher two examples of natural light. Then, move on to the Got It? section.