Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 610 · 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 the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the same light
2. 2.🧺 Which of these is not needed for the periscope? (a) a pencil (b) vinegar (c) an empty juice carton (d) two small mirrors
3. 3.🔮 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
4. 4.⚖️ 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) True (b) False
5. 5.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) still clear water (d) a dull brick
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) aluminium foil (d) a shiny steel plate
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
9. 9.⚖️ 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
10. 10.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) yeast
13. 13.True or false: a ruler is not needed for the periscope. (a) True (b) False
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) vinegar (d) a balloon
16. 16.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.⚖️ 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
21. 21.True or false: a balloon is not needed for the periscope. (a) False (b) True
22. 22.⚖️ 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 mirrors
23. 23.⚖️ 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
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🧺 Which of these is needed for the periscope? (a) yeast (b) a pencil (c) turmeric powder (d) a magnet
28. 28.True or false: a magnet is needed for the periscope. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) black cloth
30. 30.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) a mirror
31. 31.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) aluminium foil (d) a shiny steel plate
32. 32.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a mirror
34. 34.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.True or false: a pencil is needed for the periscope. (a) False (b) True
36. 36.True or false: aluminium foil reflects light well. (a) True (b) False
37. 37.🔮 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
38. 38.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
39. 39.True or false: black cloth reflects light well. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False

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