Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 101 · 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 the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same light (d) the same carton
2. 2.🔍 Which is the odd one out? (a) still clear water (b) dark soil (c) a shiny steel plate (d) a mirror
3. 3.🧺 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 magnet
4. 4.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.True or false: still clear water reflects light well. (a) False (b) True
8. 8.True or false: yeast is not needed for the periscope. (a) True (b) False
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
11. 11.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
13. 13.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) a pencil (d) a magnet
14. 14.⚖️ 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) False (b) True
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) a ruler (d) sticky tape
16. 16.⚖️ 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 light (c) how clear the view is
17. 17.True or false: a magnet is not needed for the periscope. (a) True (b) False
18. 18.🔭 Which of these reflects light poorly? (a) a mirror (b) black cloth (c) a shiny steel plate (d) still clear water
19. 19.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a rough wooden board (d) a mirror
20. 20.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
21. 21.⚖️ 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
22. 22.True or false: a pencil is not needed for the periscope. (a) True (b) False
23. 23.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a ruler (c) a pencil (d) an empty juice carton
24. 24.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) a dull brick
25. 25.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.⚖️ 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
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
29. 29.⚖️ 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
30. 30.True or false: vinegar is needed for the periscope. (a) False (b) True
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) vinegar (d) sticky tape
33. 33.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
34. 34.⚖️ 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 same carton
35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
36. 36.True or false: turmeric powder is needed for the periscope. (a) False (b) True
37. 37.True or false: vinegar is not needed for the periscope. (a) False (b) True
38. 38.True or false: a mirror reflects light well. (a) True (b) False
39. 39.True or false: a battery cell is needed for the periscope. (a) False (b) True
40. 40.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed

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