Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 945 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) yeast (d) an empty juice carton
3. 3.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
4. 4.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
5. 5.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
6. 6.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a rough wooden board (d) a dull brick
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
8. 8.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a farmer (d) a pilot in a plane
9. 9.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) turmeric powder (d) a balloon
10. 10.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) an empty juice carton (d) vinegar
14. 14.True or false: a battery cell is not needed for the periscope. (a) True (b) False
15. 15.True or false: a battery cell is needed for the periscope. (a) True (b) False
16. 16.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a rough wooden board (d) a dull brick
17. 17.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
18. 18.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
20. 20.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) aluminium foil (d) a rough wooden board
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
22. 22.⚖️ 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 same mirrors (d) the object we look at
23. 23.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
24. 24.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) turmeric powder (d) sticky tape
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) turmeric powder (d) a ruler
27. 27.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.True or false: a magnet is needed for the periscope. (a) False (b) True
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
32. 32.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.True or false: a mirror reflects light well. (a) False (b) True
34. 34.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a mirror (d) a dull brick
35. 35.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
37. 37.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a dull brick
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (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 well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a shiny steel plate

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