Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 214 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
2. 2.True or false: a pencil is not needed for the periscope. (a) True (b) False
3. 3.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a magnet
4. 4.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) black cloth
5. 5.True or false: dark soil reflects light poorly. (a) False (b) True
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
7. 7.True or false: a battery cell is needed for the periscope. (a) True (b) False
8. 8.⚖️ 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 measure it (c) we keep it the same
9. 9.🔮 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
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ 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 object we look at (c) the angle of the mirrors (d) the same light
13. 13.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
14. 14.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
15. 15.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) turmeric powder
19. 19.True or false: sticky tape is needed for the periscope. (a) False (b) True
20. 20.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) sticky tape (d) yeast
22. 22.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) vinegar
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) aluminium foil
25. 25.⚖️ 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
26. 26.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
27. 27.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) a dull brick (d) black cloth
28. 28.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) vinegar (d) sticky tape
29. 29.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) a battery cell
32. 32.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) a shiny steel plate
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.True or false: a magnet is needed for the periscope. (a) True (b) False
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) vinegar
36. 36.True or false: a ruler is not needed for the periscope. (a) True (b) False
37. 37.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.True or false: two small mirrors is not needed for the periscope. (a) True (b) False

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