Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 405 · 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? True or false: the same light is what we measure. (a) True (b) False
2. 2.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.⚖️ 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 change it (c) we measure it
4. 4.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a magnet (d) an empty juice carton
8. 8.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a pencil (d) vinegar
9. 9.True or false: still clear water reflects light poorly. (a) False (b) True
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) a balloon
11. 11.True or false: black cloth reflects light well. (a) True (b) False
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
13. 13.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a shiny steel plate (d) a mirror
14. 14.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
17. 17.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🧺 Which of these is needed for the periscope? (a) a magnet (b) sticky tape (c) turmeric powder (d) a battery cell
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
20. 20.True or false: a battery cell is not needed for the periscope. (a) False (b) True
21. 21.True or false: a ruler is not needed for the periscope. (a) False (b) True
22. 22.⚖️ 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
23. 23.⚖️ 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) the same light (c) how clear the view is (d) the same carton
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) a pencil (d) an empty juice carton
26. 26.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.True or false: a rough wooden board reflects light poorly. (a) True (b) False
28. 28.True or false: a shiny steel plate reflects light well. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) a mirror (d) still clear water
30. 30.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.True or false: vinegar is not needed for the periscope. (a) True (b) False
32. 32.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) still clear water
33. 33.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) black cloth (d) a rough wooden board
34. 34.⚖️ 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
35. 35.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
36. 36.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a shiny steel plate
37. 37.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a shiny steel plate (d) black cloth
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.True or false: a mirror reflects light well. (a) True (b) False

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