Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 433 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a magnet (d) an empty juice carton
3. 3.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) still clear water
4. 4.⚖️ 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) False (b) True
5. 5.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) still clear water
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.True or false: sticky tape is needed for the periscope. (a) False (b) True
8. 8.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a battery cell (d) sticky tape
9. 9.⚖️ 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 light (c) the object we look at (d) the same carton
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) an empty juice carton (d) turmeric powder
12. 12.⚖️ 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
13. 13.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
16. 16.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
17. 17.True or false: a mirror reflects light well. (a) False (b) True
18. 18.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) an empty juice carton (d) a balloon
20. 20.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) dark soil (d) a rough wooden board
21. 21.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) yeast (d) a pencil
23. 23.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a ruler (d) two small mirrors
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
26. 26.⚖️ 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 keep it the same (b) we measure it (c) we change it
27. 27.⚖️ 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 mirrors (c) the same light (d) the object we look at
28. 28.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) dark soil (d) a rough wooden board
29. 29.⚖️ 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
30. 30.True or false: black cloth reflects light well. (a) False (b) True
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) vinegar (d) an empty juice carton
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 mirrors (c) how clear the view is
33. 33.True or false: a rough wooden board reflects light well. (a) True (b) False
34. 34.True or false: a pencil is not needed for the periscope. (a) False (b) True
35. 35.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
37. 37.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
38. 38.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) a ruler (d) sticky tape
39. 39.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a balloon (d) two small mirrors
40. 40.True or false: aluminium foil reflects light well. (a) True (b) False

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