Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 911 · 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.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
2. 2.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
7. 7.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a balloon (d) an empty juice carton
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a pencil (c) two small mirrors (d) an empty juice carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
14. 14.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) still clear water (d) aluminium foil
15. 15.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
17. 17.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a ruler (d) a balloon
18. 18.True or false: a battery cell is needed for the periscope. (a) False (b) True
19. 19.⚖️ 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 mirrors (b) the angle of the mirrors (c) the same light (d) the object we look at
20. 20.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
21. 21.⚖️ 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) False (b) True
22. 22.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
23. 23.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
24. 24.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) a magnet
26. 26.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
27. 27.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
28. 28.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) a shiny steel plate (d) still clear water
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
31. 31.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same light (c) how clear the view is
33. 33.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
34. 34.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) black cloth
35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
36. 36.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) turmeric powder
38. 38.🔮 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
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a ruler (d) sticky tape
40. 40.True or false: a shiny steel plate reflects light poorly. (a) False (b) True

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