Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 179 · 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.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
2. 2.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) still clear water
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) vinegar
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.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) two small mirrors (d) vinegar
7. 7.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a rough wooden board (d) a dull brick
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
12. 12.⚖️ 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
13. 13.True or false: a battery cell is not needed for the periscope. (a) False (b) True
14. 14.True or false: a mirror reflects light poorly. (a) True (b) False
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
16. 16.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) sticky tape (d) a magnet
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
19. 19.True or false: still clear water reflects light poorly. (a) True (b) False
20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
21. 21.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
24. 24.True or false: turmeric powder is needed for the periscope. (a) False (b) True
25. 25.True or false: dark soil reflects light well. (a) True (b) False
26. 26.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
28. 28.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) a pencil (d) two small mirrors
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
31. 31.True or false: a dull brick reflects light well. (a) False (b) True
32. 32.True or false: a ruler is needed for the periscope. (a) True (b) False
33. 33.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
34. 34.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
35. 35.True or false: dark soil reflects light poorly. (a) False (b) True
36. 36.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same carton (d) the same mirrors
38. 38.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) dark soil
39. 39.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
40. 40.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) two small mirrors

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