Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 181 · 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.⚖️ 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) the same carton (d) how clear the view is
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a ruler (d) vinegar
5. 5.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a rough wooden board
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) turmeric powder (d) two small mirrors
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) a pencil (d) an empty juice carton
10. 10.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
13. 13.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
14. 14.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
16. 16.⚖️ 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 mirrors (b) the same light (c) the angle of the mirrors (d) the object we look at
17. 17.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
18. 18.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a dull brick
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
22. 22.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
23. 23.True or false: black cloth reflects light poorly. (a) True (b) False
24. 24.🧺 Which of these is needed for the periscope? (a) a balloon (b) a pencil (c) yeast (d) vinegar
25. 25.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
26. 26.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a balloon (d) a ruler
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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 same light (c) the angle of the mirrors
31. 31.True or false: two small mirrors is needed for the periscope. (a) False (b) True
32. 32.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
35. 35.True or false: a magnet is not needed for the periscope. (a) True (b) False
36. 36.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) an empty juice carton (d) a balloon
38. 38.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) a shiny steel plate

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