Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 309 · 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.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) still clear water (d) a shiny steel plate
2. 2.True or false: vinegar is needed for the periscope. (a) True (b) False
3. 3.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.True or false: dark soil reflects light well. (a) True (b) False
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a ruler (d) a battery cell
7. 7.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) yeast (d) sticky tape
9. 9.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) still clear water (d) a shiny steel plate
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a dull brick
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
13. 13.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) dark soil (d) a dull brick
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) turmeric powder (d) a ruler
21. 21.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
22. 22.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
23. 23.⚖️ 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
24. 24.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) still clear water (d) black cloth
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
26. 26.True or false: sticky tape is not needed for the periscope. (a) True (b) False
27. 27.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) a balloon (d) yeast
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.True or false: a battery cell is not needed for the periscope. (a) True (b) False
30. 30.⚖️ 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
31. 31.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) vinegar
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) sticky tape (d) a battery cell
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) a rough wooden board
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
38. 38.True or false: sticky tape is needed for the periscope. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) a magnet
40. 40.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view

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