Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 919 · 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? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) dark soil (d) a rough wooden board
3. 3.True or false: a dull brick reflects light well. (a) True (b) False
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 object we look at (b) the same carton (c) the angle of the mirrors (d) how clear the view is
5. 5.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
6. 6.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.True or false: aluminium foil reflects light well. (a) True (b) False
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
12. 12.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) black cloth (d) aluminium foil
13. 13.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) aluminium foil
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) vinegar (d) two small mirrors
16. 16.True or false: sticky tape is not needed for the periscope. (a) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) turmeric powder (d) two small mirrors
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) a ruler (d) two small mirrors
19. 19.True or false: a rough wooden board reflects light well. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a mirror (d) a shiny steel plate
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a dull brick
23. 23.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) a ruler
27. 27.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
28. 28.True or false: a ruler is not needed for the periscope. (a) False (b) True
29. 29.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
30. 30.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
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.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) a pencil (d) an empty juice carton
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
35. 35.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a brighter view (d) a rainbow
37. 37.True or false: still clear water reflects light poorly. (a) True (b) False
38. 38.True or false: turmeric powder is needed for the periscope. (a) True (b) False
39. 39.True or false: a pencil is not needed for the periscope. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil

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