Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 836 · 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.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
3. 3.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
4. 4.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a magnet (d) an empty juice carton
9. 9.⚖️ 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 angle of the mirrors (c) the same light
10. 10.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) an empty juice carton (d) vinegar
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
15. 15.🔭 Does dark soil 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 ruler (b) vinegar (c) a balloon (d) turmeric powder
17. 17.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a ruler
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) aluminium foil (d) a dull brick
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.True or false: a ruler is needed for the periscope. (a) False (b) True
22. 22.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
23. 23.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
24. 24.🛟 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
25. 25.True or false: a balloon is needed for the periscope. (a) False (b) True
26. 26.True or false: vinegar is needed for the periscope. (a) True (b) False
27. 27.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) a mirror
28. 28.🔭 Which of these reflects light poorly? (a) dark soil (b) a shiny steel plate (c) aluminium foil (d) a mirror
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) vinegar
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 change it (b) we keep it the same (c) we measure it
31. 31.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
32. 32.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) sticky tape
33. 33.True or false: black cloth reflects light well. (a) False (b) True
34. 34.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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 measure it (b) we change it (c) we keep it the same
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.True or false: still clear water reflects light poorly. (a) True (b) False
40. 40.True or false: a mirror reflects light well. (a) False (b) True

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