Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 383 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a ruler (d) an empty juice carton
2. 2.⚖️ 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
3. 3.True or false: aluminium foil reflects light poorly. (a) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a magnet (d) a ruler
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) still clear water (d) dark soil
13. 13.True or false: sticky tape 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 object we look at”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a magnet (d) an empty juice carton
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
18. 18.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
19. 19.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) sticky tape (d) a balloon
22. 22.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a ruler (c) sticky tape (d) two small mirrors
24. 24.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) black cloth
25. 25.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same light (c) how clear the view is (d) the angle of the mirrors
27. 27.True or false: a battery cell is needed for the periscope. (a) False (b) True
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
29. 29.True or false: sticky tape is needed for the periscope. (a) False (b) True
30. 30.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) black cloth (d) aluminium foil
32. 32.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
35. 35.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
36. 36.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a rough wooden board
37. 37.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
38. 38.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the same light (d) the object we look at

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