Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 560 · 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 is the odd one out? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
2. 2.True or false: still clear water reflects light poorly. (a) False (b) True
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) an empty juice carton (d) a pencil
5. 5.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.True or false: still clear water reflects light well. (a) True (b) False
8. 8.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the same mirrors (d) the same carton
11. 11.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.⚖️ 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 mirrors (c) the angle of the mirrors
13. 13.⚖️ 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
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same light (c) how clear the view is
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.⚖️ 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
17. 17.True or false: aluminium foil reflects light poorly. (a) True (b) False
18. 18.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) an empty juice carton (d) yeast
19. 19.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) a mirror (d) a shiny steel plate
20. 20.True or false: a balloon is needed for the periscope. (a) True (b) False
21. 21.🔭 How many mirrors does a simple periscope use?
22. 22.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
23. 23.🔮 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
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
26. 26.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) sticky tape (d) yeast
27. 27.⚖️ 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 angle of the mirrors (c) the same carton (d) how clear the view is
28. 28.🧺 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) an empty juice carton
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) sticky tape (d) vinegar
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
32. 32.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
33. 33.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
35. 35.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
36. 36.True or false: aluminium foil reflects light well. (a) False (b) True
37. 37.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a ruler (d) turmeric powder
38. 38.True or false: sticky tape is needed for the periscope. (a) False (b) True
39. 39.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) black cloth (d) dark soil

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