Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 724 · 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.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
3. 3.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) still clear water
4. 4.True or false: turmeric powder is needed for the periscope. (a) True (b) False
5. 5.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
8. 8.True or false: sticky tape is not needed for the periscope. (a) False (b) True
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a ruler (d) two small mirrors
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) black cloth
13. 13.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) a magnet (d) vinegar
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
15. 15.True or false: vinegar is needed for the periscope. (a) False (b) True
16. 16.🔮 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
17. 17.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
20. 20.True or false: a mirror reflects light poorly. (a) False (b) True
21. 21.⚖️ 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 mirrors (c) the angle of the mirrors (d) how clear the view is
22. 22.⚖️ 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
23. 23.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) aluminium foil
26. 26.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
27. 27.True or false: black cloth reflects light well. (a) False (b) True
28. 28.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) two small mirrors (d) a pencil
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a battery cell (d) two small mirrors
33. 33.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) aluminium foil
34. 34.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same light (c) how clear the view is
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
37. 37.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
38. 38.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) black cloth (d) still clear water

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