Periscope STEM Project Worksheet

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

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