Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 775 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) how clear the view is (d) the angle of the mirrors
2. 2.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) dark soil (d) a mirror
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
6. 6.True or false: a mirror reflects light well. (a) True (b) False
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) a mirror (d) black cloth
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) turmeric powder (d) an empty juice carton
11. 11.🧺 Which of these is not needed for the periscope? (a) a balloon (b) an empty juice carton (c) a ruler (d) sticky tape
12. 12.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) a rough wooden board
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
15. 15.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.True or false: aluminium foil reflects light well. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) turmeric powder
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
21. 21.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) turmeric powder
22. 22.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.⚖️ 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 mirrors
24. 24.True or false: sticky tape is needed for the periscope. (a) False (b) True
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
26. 26.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) yeast
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) vinegar
30. 30.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) black cloth (d) dark soil
31. 31.True or false: a mirror reflects light poorly. (a) True (b) False
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
33. 33.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) dark soil (d) a mirror
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: a ruler is not needed for the periscope. (a) False (b) True
36. 36.True or false: a ruler is needed for the periscope. (a) True (b) False
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
38. 38.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.True or false: a battery cell 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) much bigger (b) upside down only (c) flipped left to right (d) in colour

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