Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 68 · 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 object we look at”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
3. 3.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a mirror (d) aluminium foil
4. 4.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) a ruler
6. 6.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a mirror (d) black cloth
7. 7.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) a pencil (d) an empty juice carton
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) a pencil (d) an empty juice carton
9. 9.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
10. 10.🔮 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
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 change it (b) we measure it (c) we keep it the same
12. 12.True or false: a battery cell is not needed for the periscope. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) dark soil (d) aluminium foil
14. 14.True or false: dark soil reflects light poorly. (a) False (b) True
15. 15.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
16. 16.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
17. 17.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) black cloth
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a rough wooden board
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a mirror (d) a rough wooden board
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
22. 22.True or false: dark soil reflects light well. (a) True (b) False
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
24. 24.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a pencil (d) a battery cell
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
28. 28.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a magnet (d) a ruler
30. 30.🧺 Which of these is needed for the periscope? (a) a pencil (b) turmeric powder (c) yeast (d) a magnet
31. 31.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.True or false: a mirror reflects light well. (a) True (b) False
33. 33.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
34. 34.True or false: a battery cell is needed for the periscope. (a) False (b) True
35. 35.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) sticky tape (d) turmeric powder
36. 36.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
37. 37.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
38. 38.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) still clear water
40. 40.True or false: a magnet is needed for the periscope. (a) True (b) False

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