Science Fair Projects
physicseasy elementary 60 days

Building a Periscope - Light Reflection Project

In this engaging project, students will build a simple periscope using mirrors and a cardboard tube. This project will teach them about the reflection of light, angles, and how periscopes are used in real life. It's a fun and practical way to introduce young learners to basic principles of physics and optics.

Building a Periscope - Light Reflection Project

Hypothesis

If I position two mirrors at an angle in a tube, then I will be able to see an image from a different perspective.

Materials Needed

cardboard tube (toilet paper roll) — 1Buy
two small mirrors — 2Buy
scissors — 1Buy
tape — 1 rollBuy
ruler — 1Buy

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Step-by-Step Procedure

  1. 1

    Cut the cardboard tube to a length of about 10 inches.

  2. 2

    Cut two small openings on opposite sides of the tube, about 2 inches from the top.

  3. 3

    Place a mirror at a 45-degree angle in each opening using tape.

  4. 4

    Ensure the mirrors face each other inside the tube.

  5. 5

    Stand the periscope upright and look through the open end.

  6. 6

    Test the periscope by placing it at different angles to see the reflected images.

  7. 7

    Discuss how the angles of the mirrors affect the reflection.

  8. 8

    Clean up and put away materials safely.

Expected Results

Students will be able to see an image from a different angle through the periscope, demonstrating principles of light reflection.

Variables

Independent Variable

Angle of mirrors

Dependent Variable

Quality of the reflected image

Controlled Variables

length of the tube, size of mirrors, light conditions

Safety Notes

Be cautious with scissors when cutting materials.

Presentation Tips

  • Demonstrate how the periscope works during the presentation.

  • Use diagrams to explain the principle of light reflection.

  • Encourage the audience to try looking through the periscope.

  • Discuss real-life applications of periscopes.

Frequently Asked Questions

Why do the mirrors have to be at an angle?

The angles allow light to reflect and change direction.

Can I use different types of mirrors?

Yes, but flat mirrors are best for clear reflections.

Is this project safe for young children?

Yes, with proper supervision when using scissors.

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