Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 723 · 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: a mirror reflects light well. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) black cloth (d) a dull brick
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
4. 4.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) aluminium foil
5. 5.True or false: dark soil reflects light well. (a) True (b) False
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a battery cell (d) two small mirrors
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a mirror (d) a shiny steel plate
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) a mirror
12. 12.⚖️ 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
13. 13.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
14. 14.True or false: a battery cell is needed for the periscope. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) a shiny steel plate
16. 16.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a dull brick (d) a shiny steel plate
17. 17.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) yeast (d) an empty juice carton
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
20. 20.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a magnet (d) sticky tape
21. 21.True or false: a rough wooden board reflects light well. (a) True (b) False
22. 22.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a shiny steel plate (d) black cloth
23. 23.True or false: turmeric powder is needed for the periscope. (a) False (b) True
24. 24.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
25. 25.⚖️ 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
26. 26.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
28. 28.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a ruler (d) a balloon
29. 29.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.True or false: sticky tape is not needed for the periscope. (a) True (b) False
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) sticky tape (d) vinegar
36. 36.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) a balloon (d) vinegar
37. 37.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) dark soil
38. 38.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) black cloth (d) a dull brick
39. 39.⚖️ 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) how clear the view is (d) the angle of the mirrors
40. 40.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed

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