Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 345 · 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.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
2. 2.True or false: a magnet is not needed for the periscope. (a) False (b) True
3. 3.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.True or false: a shiny steel plate reflects light well. (a) False (b) True
5. 5.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) vinegar
8. 8.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) a pencil (d) yeast
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) a ruler (d) an empty juice carton
10. 10.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
12. 12.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
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? True or false: the same mirrors is kept the same. (a) True (b) False
15. 15.True or false: aluminium foil reflects light well. (a) False (b) True
16. 16.🧺 Which of these is needed for the periscope? (a) vinegar (b) a ruler (c) yeast (d) a magnet
17. 17.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
18. 18.⚖️ 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
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
20. 20.⚖️ 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 mirrors (c) how clear the view is
21. 21.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) an empty juice carton (d) two small mirrors
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) two small mirrors
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 angle of the mirrors (b) how clear the view is (c) the same carton (d) the object we look at
28. 28.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) a magnet (d) an empty juice carton
29. 29.True or false: still clear water reflects light poorly. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a mirror
31. 31.True or false: vinegar is needed for the periscope. (a) False (b) True
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
33. 33.True or false: a ruler is not needed for the periscope. (a) True (b) False
34. 34.True or false: sticky tape is needed for the periscope. (a) True (b) False
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
36. 36.🔭 Which of these reflects light well? (a) a dull brick (b) a shiny steel plate (c) black cloth (d) dark soil
37. 37.⚖️ 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 same carton (c) how clear the view is (d) the object we look at
38. 38.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a dull brick

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