Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 988 · 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.⚖️ 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 keep it the same (c) we measure it
2. 2.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) a dull brick
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) dark soil (d) black cloth
5. 5.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a battery cell (d) two small mirrors
6. 6.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) aluminium foil (d) still clear water
7. 7.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
8. 8.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
9. 9.🔮 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
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) dark soil
13. 13.True or false: sticky tape is not needed for the periscope. (a) False (b) True
14. 14.True or false: a ruler is needed for the periscope. (a) False (b) True
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
19. 19.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
20. 20.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) a rough wooden board
22. 22.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
24. 24.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a rough wooden board (d) a mirror
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a battery cell (d) a pencil
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same carton (d) the object we look at
28. 28.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
30. 30.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
31. 31.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
32. 32.True or false: a mirror reflects light poorly. (a) False (b) True
33. 33.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
35. 35.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) sticky tape (d) turmeric powder
36. 36.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) two small mirrors (d) yeast
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) how clear the view is (c) the same mirrors (d) the angle of the mirrors
39. 39.⚖️ 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 measure it (c) we change it
40. 40.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed

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