Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 820 · 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.True or false: a pencil is needed for the periscope. (a) True (b) False
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) a ruler (d) sticky tape
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
5. 5.⚖️ 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 same carton (c) the angle of the mirrors (d) the same light
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) yeast
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a magnet (d) two small mirrors
9. 9.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.⚖️ 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) True (b) False
11. 11.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) a balloon (d) sticky tape
12. 12.⚖️ 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
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.True or false: a rough wooden board reflects light well. (a) True (b) False
15. 15.True or false: sticky tape is not needed for the periscope. (a) False (b) True
16. 16.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
17. 17.True or false: yeast is not needed for the periscope. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.True or false: aluminium foil reflects light poorly. (a) True (b) False
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) aluminium foil
25. 25.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
26. 26.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
28. 28.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a mirror (d) aluminium foil
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
31. 31.🧺 Which of these is needed for the periscope? (a) yeast (b) sticky tape (c) a magnet (d) turmeric powder
32. 32.🔮 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
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) vinegar (d) an empty juice carton
34. 34.⚖️ 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
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
37. 37.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.⚖️ 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) how clear the view is (c) the same light
40. 40.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running

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