Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 103 · 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) black cloth (b) still clear water (c) aluminium foil (d) a mirror
2. 2.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) still clear water (d) dark soil
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board
7. 7.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) a magnet
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same light (c) how clear the view is (d) the angle of the mirrors
9. 9.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
10. 10.True or false: aluminium foil reflects light poorly. (a) False (b) True
11. 11.⚖️ 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
12. 12.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
14. 14.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
15. 15.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) a pencil (d) two small mirrors
19. 19.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
20. 20.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) sticky tape (d) turmeric powder
22. 22.True or false: vinegar is needed for the periscope. (a) True (b) False
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
24. 24.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) two small mirrors (d) a ruler
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
26. 26.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
27. 27.True or false: a mirror reflects light well. (a) True (b) False
28. 28.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) a balloon (d) turmeric powder
30. 30.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
31. 31.True or false: a magnet is not needed for the periscope. (a) False (b) True
32. 32.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a ruler (d) a battery cell
33. 33.True or false: a battery cell is not needed for the periscope. (a) False (b) True
34. 34.True or false: dark soil reflects light poorly. (a) False (b) True
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a rough wooden board (d) a dull brick
36. 36.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) vinegar (c) a magnet (d) yeast
37. 37.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
38. 38.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.⚖️ 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
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees

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