Mega DIY Periscope Challenge
⚠️ Safety Warning
Be careful with scissors and mirror edges. Adult help recommended for cutting.
All experiments require adult supervision.
Materials You'll Need
Gather these 5 items before starting
💡 Tip: Check off items as you gather them to stay organized!
Step-by-Step Instructions
Follow these 8 steps carefully
clean out the milk carton and cut off the top and bottom.
Cut a small square window near the top on one side of the carton.
Cut another small square window near the bottom on the opposite side.
Place one mirror inside the carton at a 45-degree angle near the top window, reflecting downward.
Tape the mirror securely in place.
Place the second mirror at a 45-degree angle near the bottom window, reflecting toward the viewer.
Look through the bottom window — you should see what is above you through the top window!
Decorate your periscope and test it by looking over walls or around corners.
✅ Remember: Take your time with each step and ask an adult for help if needed!
The Science Behind It 🔬
A periscope works using the law of reflection: light bounces off a mirror at the same angle it hits it. The top mirror catches light from above and reflects it downward to the second mirror, which reflects it into your eyes. Submarines use periscopes to see above water while staying submerged. The 45-degree angle is crucial because it redirects light exactly 90 degrees, allowing you to see around corners or over obstacles! Try changing one variable at a time to see how it affects the results — this is called the scientific method!