Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 814 · 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 what we measure? (a) the same light (b) the angle of the mirrors (c) how clear the view is (d) the object we look at
2. 2.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a magnet (d) a balloon
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
5. 5.True or false: a shiny steel plate reflects light well. (a) False (b) True
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) a rough wooden board
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) vinegar (d) two small mirrors
8. 8.⚖️ 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
9. 9.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) two small mirrors (d) a battery cell
11. 11.True or false: a mirror reflects light well. (a) False (b) True
12. 12.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) a magnet (d) an empty juice carton
16. 16.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a dull brick
17. 17.True or false: a ruler is needed for the periscope. (a) True (b) False
18. 18.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
19. 19.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) two small mirrors (d) an empty juice carton
21. 21.True or false: a dull brick reflects light well. (a) False (b) True
22. 22.True or false: sticky tape is not needed for the periscope. (a) True (b) False
23. 23.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) vinegar
24. 24.True or false: vinegar is needed for the periscope. (a) True (b) False
25. 25.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a rough wooden board (d) a dull brick
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
31. 31.🧺 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
32. 32.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) dark soil
33. 33.🛟 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
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) a dull brick
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.True or false: dark soil reflects light poorly. (a) False (b) True
37. 37.True or false: a rough wooden board reflects light poorly. (a) True (b) False
38. 38.True or false: vinegar is not needed for the periscope. (a) True (b) False
39. 39.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
40. 40.⚖️ 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 measure it (c) we keep it the same

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