Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 275 · 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 dull brick (b) a shiny steel plate (c) aluminium foil (d) a mirror
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
4. 4.⚖️ 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
5. 5.True or false: a battery cell is not needed for the periscope. (a) True (b) False
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) a mirror
8. 8.⚖️ 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
9. 9.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.⚖️ 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 mirrors (b) the object we look at (c) the angle of the mirrors (d) how clear the view is
11. 11.True or false: a magnet is needed for the periscope. (a) True (b) False
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
13. 13.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) a balloon (d) a pencil
15. 15.⚖️ 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
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
18. 18.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) a pencil (d) an empty juice carton
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a ruler
20. 20.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) aluminium foil (d) a mirror
22. 22.🔮 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
23. 23.🧺 Which of these is needed for the periscope? (a) sticky tape (b) turmeric powder (c) a battery cell (d) a balloon
24. 24.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
25. 25.⚖️ 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 object we look at
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
27. 27.True or false: black cloth reflects light poorly. (a) False (b) True
28. 28.True or false: dark soil reflects light well. (a) True (b) False
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.True or false: two small mirrors is needed for the periscope. (a) False (b) True
31. 31.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
33. 33.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a ruler (d) a pencil
35. 35.True or false: dark soil reflects light poorly. (a) True (b) False
36. 36.⚖️ 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
37. 37.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
38. 38.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) black cloth (d) a dull brick
39. 39.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) black cloth
40. 40.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) two small mirrors (d) a balloon

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