Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 41 · 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.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a balloon (d) an empty juice carton
2. 2.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
3. 3.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
4. 4.⚖️ 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) the same carton (c) the object we look at (d) how clear the view is
5. 5.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.True or false: a ruler is not needed for the periscope. (a) False (b) True
9. 9.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
10. 10.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.True or false: still clear water reflects light well. (a) True (b) False
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.⚖️ 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 measure it (c) we change it
16. 16.True or false: a magnet is not needed for the periscope. (a) False (b) True
17. 17.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
18. 18.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a pencil (d) vinegar
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) an empty juice carton
23. 23.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
26. 26.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) turmeric powder (d) two small mirrors
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a pencil (d) a ruler
28. 28.⚖️ 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
29. 29.True or false: turmeric powder is needed for the periscope. (a) True (b) False
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
31. 31.True or false: a ruler is needed for the periscope. (a) True (b) False
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) vinegar (d) a battery cell
34. 34.🔭 How many mirrors does a simple periscope use?
35. 35.True or false: sticky tape is needed for the periscope. (a) True (b) False
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) two small mirrors (d) an empty juice carton
37. 37.True or false: black cloth reflects light poorly. (a) True (b) False
38. 38.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) a dull brick
39. 39.True or false: still clear water reflects light poorly. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False

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