Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 532 · 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? True or false: how clear the view is is what we measure. (a) False (b) True
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
3. 3.True or false: a dull brick reflects light well. (a) False (b) True
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) yeast (d) a ruler
6. 6.True or false: dark soil reflects light well. (a) True (b) False
7. 7.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) two small mirrors (d) an empty juice carton
9. 9.⚖️ 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
10. 10.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
11. 11.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the same carton (d) the angle of the mirrors
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) two small mirrors (d) a ruler
16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a battery cell (c) two small mirrors (d) sticky tape
17. 17.True or false: a ruler is not needed for the periscope. (a) True (b) False
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
19. 19.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
20. 20.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
21. 21.True or false: vinegar is not needed for the periscope. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
23. 23.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
24. 24.True or false: a shiny steel plate reflects light well. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) aluminium foil
27. 27.⚖️ 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 change it (b) we measure it (c) we keep it the same
28. 28.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) a battery cell (d) vinegar
29. 29.True or false: aluminium foil reflects light well. (a) True (b) False
30. 30.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
32. 32.⚖️ 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
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 change it (b) we keep it the same (c) we measure it
34. 34.True or false: a battery cell is not needed for the periscope. (a) False (b) True
35. 35.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) vinegar (d) sticky tape
36. 36.⚖️ 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 object we look at (c) how clear the view is
37. 37.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
38. 38.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
40. 40.True or false: yeast is not needed for the periscope. (a) True (b) False

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