Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 844 · 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.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
2. 2.⚖️ 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) the same carton (c) the angle of the mirrors (d) how clear the view is
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) so it can float (d) to make it heavy
9. 9.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
10. 10.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) sticky tape (d) two small mirrors
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the angle of the mirrors (c) how clear the view is (d) the same carton
14. 14.True or false: aluminium foil reflects light well. (a) False (b) True
15. 15.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) a battery cell (d) sticky tape
17. 17.True or false: a shiny steel plate reflects light well. (a) True (b) False
18. 18.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) dark soil
19. 19.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) turmeric powder (d) a magnet
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) a ruler (d) a pencil
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a ruler (d) a balloon
23. 23.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
24. 24.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) a ruler
27. 27.⚖️ 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 mirrors
28. 28.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.True or false: a mirror reflects light poorly. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) black cloth
32. 32.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
33. 33.True or false: black cloth reflects light poorly. (a) True (b) False
34. 34.True or false: dark soil reflects light well. (a) False (b) True
35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
36. 36.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
39. 39.True or false: sticky tape is not needed for the periscope. (a) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) vinegar

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