Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 46 · 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) a magnet (b) two small mirrors (c) a pencil (d) sticky tape
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
3. 3.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a ruler (c) sticky tape (d) two small mirrors
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
7. 7.🛟 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
8. 8.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
9. 9.True or false: a dull brick reflects light well. (a) True (b) False
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
11. 11.🔭 How many mirrors does a simple periscope use?
12. 12.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) a balloon (d) turmeric powder
13. 13.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) a pencil (d) sticky tape
18. 18.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) aluminium foil
19. 19.🔮 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
20. 20.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) two small mirrors (d) a ruler
22. 22.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
24. 24.⚖️ 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
25. 25.True or false: dark soil reflects light well. (a) False (b) True
26. 26.True or false: black cloth reflects light poorly. (a) True (b) False
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
29. 29.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
30. 30.True or false: a shiny steel plate reflects light well. (a) True (b) False
31. 31.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a rough wooden board
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) two small mirrors (c) a ruler (d) a pencil
34. 34.True or false: sticky tape is not needed for the periscope. (a) False (b) True
35. 35.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
36. 36.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the same carton
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a pencil (d) yeast
40. 40.True or false: two small mirrors is needed for the periscope. (a) True (b) False

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