Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 796 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a pencil (d) an empty juice carton
3. 3.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
4. 4.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) a balloon
6. 6.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a mirror
8. 8.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.⚖️ 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
10. 10.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
11. 11.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
12. 12.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
13. 13.⚖️ 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
14. 14.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
15. 15.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a magnet (d) a ruler
16. 16.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) yeast (d) turmeric powder
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) black cloth
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 45 degrees (d) 90 degrees
20. 20.True or false: black cloth reflects light well. (a) True (b) False
21. 21.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
23. 23.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a battery cell (d) two small mirrors
24. 24.⚖️ 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
25. 25.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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 keep it the same (b) we change it (c) we measure it
27. 27.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) the angle of the mirrors (d) the object we look at
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.True or false: a battery cell is not needed for the periscope. (a) False (b) True
31. 31.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) aluminium foil
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) two small mirrors (d) an empty juice carton
35. 35.True or false: a rough wooden board reflects light well. (a) False (b) True
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a magnet (c) a ruler (d) a pencil
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
38. 38.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) an empty juice carton (d) sticky tape
39. 39.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) vinegar (d) a balloon
40. 40.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a dull brick (d) aluminium foil

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