Mary Jon has taught in an elementary school for nine years, and am currently working on my doctorate in curriculum, instruction and assessment.
Reflection & Refraction Lesson for Kids
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ShowHave you ever walked outside at night and had to use a flashlight to see where you were going? Or perhaps the lights in your house went out, and you had to use a flashlight to get around in your home.
Did you know your flashlight was using reflection to direct the light coming from that tiny light bulb into a beam for you to see? Reflection is light bouncing off of a shiny object. Next time you pick up a flashlight, take a look at the area around the light bulb. You'll notice that it's a shiny silver color. This allows the light to bounce off the shiny material, and reflect back out to shine in any direction you point your flashlight. Since human eyes are not made like cat or dog eyes, we cannot see in the dark without extra help. Thank goodness for flashlights.
What about when you get up in the morning to brush your teeth and hair before getting started with your day? Do you look in the mirror to see if your teeth are getting clean or to make sure your hair looks good? Well, you are using reflection every time you use a mirror. If we understand that light travels in a straight path, and cannot go around objects, then we can see how light can bounce back in a straight path.
Check out this picture of a swan. It looks like there are two swans, but there is only one. The shiny water reflects the light so that it looks like there's another swan looking up from the water. There are too many examples of reflection to mention, but keep an eye out for them as you go through your day. You'll probably be surprised at all the places you see reflections happening.
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Another property of light is refraction, which is the bending of light. When light travels at an angle through one material, such as air, into another material, such as water, the light bends. The straight path that light travels in is affected by the material it is passing through. If light passes through a glass of water with a flower in it, the stem of the flower will look bent or broken, as in the example picture.
When light passes through raindrops in the sky, it creates a rainbow because the light is traveling through the air, and then through the raindrops. The bending of the light creates the colors in the rainbow.
When you use a magnifying glass to make smaller words look larger, you are using refraction. The light bends when it passes through the magnifying glass, so the words on the page look larger than they actually are. If you wear glasses, or know someone who does, you can experience how helpful refraction can be for those whose eyes need a little extra help reading.
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Reflection is light bouncing off of a shiny object. Refraction is the bending of light. To help you remember the difference between reflection and refraction, think of the mirror and the rainbow. When you look in the mirror and see your reflection, light is bouncing off of the mirror and back at you. This is what allows you to see yourself in the mirror. When light is bent traveling through a raindrop, the colors of light are being refracted. Or, think about what the words on a page look like before and after using a magnifying glass.
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