Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 280 · 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.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) turmeric powder (d) a pencil
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a balloon (d) two small mirrors
7. 7.True or false: a battery cell is needed for the periscope. (a) True (b) False
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) yeast
9. 9.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) a shiny steel plate (d) a mirror
10. 10.True or false: a shiny steel plate reflects light well. (a) True (b) False
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.🔭 How many mirrors does a simple periscope use?
13. 13.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same mirrors
17. 17.🧺 Which of these is not needed for the periscope? (a) a ruler (b) yeast (c) two small mirrors (d) an empty juice carton
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a pencil (d) yeast
20. 20.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
26. 26.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
27. 27.True or false: a ruler is needed for the periscope. (a) False (b) True
28. 28.True or false: a pencil is not needed for the periscope. (a) False (b) True
29. 29.🔭 Does a rough wooden board 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 the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors (d) the same carton
31. 31.⚖️ 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) False (b) True
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
33. 33.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
34. 34.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a battery cell (d) sticky tape
36. 36.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) an empty juice carton (d) a ruler
37. 37.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) two small mirrors (d) vinegar
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a shiny steel plate
40. 40.🔮 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

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