Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 13 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) a pencil
2. 2.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
4. 4.True or false: black cloth reflects light well. (a) True (b) False
5. 5.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a battery cell (d) a ruler
6. 6.⚖️ 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
7. 7.True or false: black cloth reflects light poorly. (a) False (b) True
8. 8.True or false: dark soil reflects light poorly. (a) False (b) True
9. 9.🧺 Which of these is needed for the periscope? (a) yeast (b) a pencil (c) a balloon (d) turmeric powder
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) still clear water
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.True or false: a battery cell is not needed for the periscope. (a) True (b) False
14. 14.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) sticky tape (d) an empty juice carton
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
20. 20.🧺 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) a balloon
21. 21.True or false: two small mirrors is needed for the periscope. (a) True (b) False
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
23. 23.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) a balloon
24. 24.True or false: sticky tape is not needed for the periscope. (a) False (b) True
25. 25.⚖️ 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 angle of the mirrors (c) the same light (d) the same mirrors
26. 26.True or false: still clear water reflects light well. (a) True (b) False
27. 27.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
28. 28.True or false: sticky tape is needed for the periscope. (a) False (b) True
29. 29.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
30. 30.True or false: a shiny steel plate reflects light well. (a) True (b) False
31. 31.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
33. 33.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a rough wooden board (d) black cloth
35. 35.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) sticky tape (d) two small mirrors
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) turmeric powder (d) an empty juice carton
38. 38.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a mirror (d) aluminium foil
39. 39.True or false: still clear water reflects light poorly. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it

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