Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 368 · 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 mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
2. 2.True or false: still clear water reflects light poorly. (a) False (b) True
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.⚖️ 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
5. 5.🔮 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
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) vinegar
7. 7.⚖️ 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) True (b) False
8. 8.⚖️ 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
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a shiny steel plate (d) still clear water
12. 12.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) a shiny steel plate (d) aluminium foil
13. 13.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
14. 14.⚖️ 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
15. 15.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
16. 16.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) sticky tape (d) an empty juice carton
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
18. 18.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) turmeric powder (d) vinegar
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a dull brick
21. 21.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) a shiny steel plate
22. 22.⚖️ 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) the angle of the mirrors (c) how clear the view is (d) the same light
23. 23.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) dark soil (d) black cloth
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
25. 25.True or false: a battery cell is not needed for the periscope. (a) True (b) False
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) an empty juice carton (d) a pencil
27. 27.⚖️ 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 same mirrors (c) the angle of the mirrors
28. 28.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a ruler (d) sticky tape
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Which of these is not needed for the periscope? (a) a balloon (b) sticky tape (c) two small mirrors (d) a pencil
32. 32.⚖️ 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 carton (c) how clear the view is
33. 33.⚖️ 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 same light (d) the angle of the mirrors
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
35. 35.True or false: dark soil reflects light poorly. (a) False (b) True
36. 36.True or false: aluminium foil reflects light poorly. (a) True (b) False
37. 37.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a magnet (d) an empty juice carton

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