Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 602 · 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? What do we do with “the object we look at”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) two small mirrors (d) sticky tape
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) still clear water (d) a dull brick
9. 9.True or false: a battery cell is not needed for the periscope. (a) True (b) False
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a balloon
11. 11.⚖️ 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
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
13. 13.True or false: a magnet is not needed for the periscope. (a) True (b) False
14. 14.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.⚖️ 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
16. 16.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) aluminium foil
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) an empty juice carton
20. 20.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) still clear water (d) aluminium foil
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.True or false: turmeric powder is needed for the periscope. (a) False (b) True
24. 24.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) black cloth
27. 27.True or false: vinegar is needed for the periscope. (a) True (b) False
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
29. 29.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) sticky tape
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) yeast
31. 31.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) turmeric powder (d) a ruler
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
33. 33.True or false: a ruler is needed for the periscope. (a) False (b) True
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
35. 35.⚖️ 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) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same light (d) the same mirrors
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
38. 38.True or false: a rough wooden board reflects light poorly. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a pencil (d) turmeric powder
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors

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