Exploring Mirrors and Periscopes: A Hands-On Learning Experience
Discover how mirrors reflect light and aid in seeing objects through the creation of a periscope. Learn about the practical applications of periscopes in submarines, tanks, and historical contexts. Engage in a fun activity to make your own periscope using a cereal box, mirrors, and tape. Experiment with the periscope to understand how light is reflected and how the device functions. Enhance your understanding of reflection and angles through a hands-on exploration.
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Presentation Transcript
LI: Can I understand how mirrors reflect light, and how they can help us see objects? Steps to success: I can explain how light is reflected. I can use my understanding of reflection to create a working periscope. I can explain how the periscope allows me to see objects I would not usually be able to see.
Discuss: Where can you find in the world, mirrors being used as periscopes? Periscopes are used in submarines to see what is happening above the surface of the water so they remained undetected. A soldier in the First World War would have used a periscope to see what was happening on the battlefield without risking being shot by a sniper. Periscopes are used in tanks so that the drivers are able to see what is happening without being shot through the viewing slot.
Making a periscope You are going to use your understanding of reflection and the angles of incidence and reflection to make a periscope. This will be done in pairs. A periscope is a device for seeing over or around something. A simple periscope is a tube with a mirror at either end. The mirrors need to be positioned so that the light is reflected from the mirror at one end, down the tube to the other mirror, then out of the tube to the observer s eyes.
Make a Periscope Using a cereal box, scissors, 2 mirrors and sticky tape, you are going to construct your own periscope. You might use the template or you may try to construct your own! Use the instructions on the Making a Periscope Activity Sheet to help you.
How Does It Work? Test out your periscope by using it to look over things, such as your table or chair, or around corners. Think about how it works. How is light reflected by the mirrors in the periscope? Draw a diagram in your book on the blank side (using a ruler for any lines) to show how the periscope worked. Use the sheet to write the explanation in your book using the vocabulary given.
