Periscope STEM Project Worksheet

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

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