Periscope STEM Project Worksheet

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

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