Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 631 · 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: aluminium foil reflects light poorly. (a) False (b) True
2. 2.True or false: a mirror reflects light poorly. (a) True (b) False
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
4. 4.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) vinegar (d) a battery cell
5. 5.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) the angle of the mirrors (d) the object we look at
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a dull brick (d) a rough wooden board
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
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 measure it (b) we keep it the same (c) we change it
12. 12.⚖️ 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
13. 13.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
14. 14.True or false: dark soil reflects light poorly. (a) True (b) False
15. 15.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) sticky tape (d) an empty juice carton
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a ruler (d) a pencil
19. 19.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
20. 20.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
21. 21.True or false: turmeric powder is needed for the periscope. (a) True (b) False
22. 22.⚖️ 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 angle of the mirrors (c) the object we look at
23. 23.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a battery cell (d) a ruler
25. 25.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) still clear water (d) aluminium foil
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 change it (b) we measure it (c) we keep it the same
27. 27.True or false: a rough wooden board reflects light well. (a) False (b) True
28. 28.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) aluminium foil (d) black cloth
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
31. 31.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
32. 32.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a shiny steel plate (d) aluminium foil
34. 34.True or false: a mirror reflects light well. (a) False (b) True
35. 35.⚖️ 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 light (c) the same mirrors (d) the angle of the mirrors
36. 36.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
37. 37.🔭 How many mirrors does a simple periscope use?
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed

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