Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 78 · 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.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
2. 2.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) a ruler (d) two small mirrors
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.⚖️ 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) how clear the view is (c) the same light
6. 6.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) a battery cell (d) yeast
7. 7.True or false: a rough wooden board reflects light well. (a) True (b) False
8. 8.⚖️ 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 angle of the mirrors (c) the object we look at
9. 9.True or false: dark soil reflects light well. (a) True (b) False
10. 10.True or false: a ruler is not needed for the periscope. (a) False (b) True
11. 11.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a battery cell (d) a ruler
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.True or false: a ruler is needed for the periscope. (a) True (b) False
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
16. 16.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) still clear water
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a balloon (d) a ruler
18. 18.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same mirrors
19. 19.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
20. 20.True or false: a battery cell is needed for the periscope. (a) True (b) False
21. 21.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) a rough wooden board (d) dark soil
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
26. 26.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
27. 27.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) yeast
30. 30.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) dark soil
31. 31.True or false: still clear water reflects light poorly. (a) True (b) False
32. 32.True or false: sticky tape is not needed for the periscope. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) a dull brick (d) dark soil
34. 34.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) vinegar (d) two small mirrors
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
38. 38.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
39. 39.⚖️ 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) how clear the view is (c) the same light (d) the angle of the mirrors
40. 40.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror

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