Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 159 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
3. 3.True or false: dark soil reflects light poorly. (a) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same carton (c) the same light (d) how clear the view is
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) a ruler (d) two small mirrors
7. 7.⚖️ 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) how clear the view is (c) the same light
8. 8.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a ruler (d) yeast
11. 11.True or false: a shiny steel plate reflects light well. (a) True (b) False
12. 12.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) a rough wooden board (d) black cloth
13. 13.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) turmeric powder (c) a pencil (d) an empty juice carton
14. 14.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a balloon (d) two small mirrors
15. 15.True or false: sticky tape is not needed for the periscope. (a) False (b) True
16. 16.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
19. 19.⚖️ 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
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) the Sun (d) a friend’s toy
22. 22.⚖️ 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) how clear the view is (c) the object we look at (d) the angle of the mirrors
23. 23.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
24. 24.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
25. 25.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
26. 26.True or false: black cloth reflects light well. (a) False (b) True
27. 27.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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 object we look at (c) the angle of the mirrors
33. 33.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a dull brick (d) a mirror
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
37. 37.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) a mirror
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) vinegar (d) an empty juice carton
40. 40.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed

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