Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 540 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) the same carton (d) how clear the view is
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) still clear water (d) a rough wooden board
4. 4.True or false: aluminium foil reflects light well. (a) True (b) False
5. 5.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) two small mirrors (d) a pencil
6. 6.⚖️ 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
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
9. 9.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) a pencil
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) turmeric powder (d) an empty juice carton
12. 12.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
14. 14.🛟 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
15. 15.True or false: yeast is needed for the periscope. (a) False (b) True
16. 16.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.⚖️ 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 keep it the same (c) we change it
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.True or false: two small mirrors is needed for the periscope. (a) True (b) False
20. 20.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
21. 21.🔭 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
22. 22.⚖️ 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 measure it (c) we change it
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a battery cell (d) a pencil
25. 25.True or false: a dull brick reflects light well. (a) True (b) False
26. 26.True or false: yeast is not needed for the periscope. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a magnet (d) a ruler
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) yeast (d) a ruler
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) a battery cell
37. 37.True or false: a battery cell is needed for the periscope. (a) True (b) False
38. 38.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
39. 39.True or false: aluminium foil 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: the object we look at is kept the same. (a) True (b) False

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