Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 310 · 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 carton”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.True or false: dark soil reflects light poorly. (a) False (b) True
6. 6.True or false: a balloon is not needed for the periscope. (a) True (b) False
7. 7.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
8. 8.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) a rough wooden board
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) a balloon (d) a magnet
13. 13.True or false: a battery cell is needed for the periscope. (a) False (b) True
14. 14.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.⚖️ 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) True (b) False
17. 17.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
19. 19.True or false: aluminium foil reflects light poorly. (a) False (b) True
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) a pencil (d) an empty juice carton
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
22. 22.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) vinegar (d) an empty juice carton
24. 24.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
25. 25.True or false: turmeric powder is needed for the periscope. (a) True (b) False
26. 26.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same light
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a battery cell (d) a ruler
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) an empty juice carton (d) yeast
30. 30.🔭 Does a shiny steel plate 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) how clear the view is (b) the same mirrors (c) the angle of the mirrors
32. 32.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a mirror (d) black cloth
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) a balloon
35. 35.⚖️ 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) False (b) True
36. 36.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) dark soil
37. 37.True or false: a rough wooden board reflects light well. (a) True (b) False
38. 38.True or false: still clear water reflects light poorly. (a) False (b) True
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ 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 object we look at (d) the angle of the mirrors

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