Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 858 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
3. 3.⚖️ 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) True (b) False
4. 4.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
7. 7.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) a shiny steel plate
8. 8.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
9. 9.True or false: a balloon is needed for the periscope. (a) True (b) False
10. 10.True or false: a pencil is needed for the periscope. (a) False (b) True
11. 11.True or false: turmeric powder is needed for the periscope. (a) True (b) False
12. 12.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) an empty juice carton (d) a pencil
14. 14.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) two small mirrors (d) a ruler
15. 15.⚖️ 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 same mirrors
16. 16.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
17. 17.True or false: a balloon is not needed for the periscope. (a) False (b) True
18. 18.True or false: a shiny steel plate reflects light well. (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 object we look at”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
24. 24.⚖️ 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 same light (c) the angle of the mirrors (d) the same mirrors
25. 25.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a balloon (d) an empty juice carton
27. 27.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board
28. 28.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) yeast (c) a pencil (d) sticky tape
29. 29.True or false: aluminium foil reflects light poorly. (a) True (b) False
30. 30.⚖️ 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
31. 31.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
32. 32.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a battery cell (d) sticky tape
33. 33.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
34. 34.True or false: a magnet is needed for the periscope. (a) False (b) True
35. 35.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
37. 37.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) yeast (d) turmeric powder
39. 39.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
40. 40.True or false: still clear water reflects light poorly. (a) False (b) True

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