Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 734 · 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 is the odd one out? (a) a dull brick (b) dark soil (c) still clear water (d) black cloth
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
3. 3.True or false: a ruler is needed for the periscope. (a) True (b) False
4. 4.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
5. 5.⚖️ 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
6. 6.True or false: aluminium foil reflects light poorly. (a) False (b) True
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a balloon (d) two small mirrors
9. 9.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a dull brick
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a shiny steel plate
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) yeast (c) an empty juice carton (d) sticky tape
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.True or false: dark soil reflects light poorly. (a) False (b) True
16. 16.True or false: a mirror reflects light well. (a) False (b) True
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
18. 18.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) vinegar (d) two small mirrors
19. 19.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
20. 20.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a ruler (c) turmeric powder (d) a magnet
21. 21.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) aluminium foil (d) black cloth
24. 24.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) sticky tape (d) a magnet
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
26. 26.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a pencil (d) a ruler
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
29. 29.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) sticky tape (d) yeast
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 90 degrees (d) 180 degrees
31. 31.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) a ruler (d) an empty juice carton
32. 32.True or false: a magnet is not needed for the periscope. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) aluminium foil
34. 34.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) black cloth (d) a rough wooden board
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a shiny steel plate
38. 38.True or false: a ruler is not needed for the periscope. (a) False (b) True
39. 39.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a pencil (d) a balloon
40. 40.True or false: dark soil reflects light well. (a) True (b) False

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