Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 323 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
2. 2.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) sticky tape
3. 3.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) black cloth (d) dark soil
4. 4.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
7. 7.True or false: a ruler is needed for the periscope. (a) False (b) True
8. 8.🧺 Which of these is not needed for the periscope? (a) a balloon (b) an empty juice carton (c) sticky tape (d) a ruler
9. 9.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) still clear water
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the same light (d) the same carton
12. 12.True or false: a ruler is not needed for the periscope. (a) True (b) False
13. 13.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
17. 17.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
18. 18.True or false: aluminium foil reflects light poorly. (a) True (b) False
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) vinegar
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
21. 21.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the object we look at (c) the angle of the mirrors (d) the same mirrors
25. 25.True or false: sticky tape is not needed for the periscope. (a) False (b) True
26. 26.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
28. 28.True or false: a dull brick reflects light poorly. (a) False (b) True
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a rough wooden board (d) dark soil
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
32. 32.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) yeast
34. 34.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a pencil (d) turmeric powder
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) yeast (d) an empty juice carton
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) sticky tape (d) an empty juice carton
39. 39.True or false: turmeric powder is needed for the periscope. (a) True (b) False
40. 40.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right

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