Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 544 · 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 mirror (b) a shiny steel plate (c) still clear water (d) black cloth
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) an empty juice carton (d) two small mirrors
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) two small mirrors (d) an empty juice carton
7. 7.True or false: aluminium foil reflects light well. (a) False (b) True
8. 8.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
9. 9.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a mirror (d) a rough wooden board
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) dark soil
11. 11.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) an empty juice carton (d) a battery cell
12. 12.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
15. 15.⚖️ 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 light (b) the object we look at (c) the same carton (d) the angle of the mirrors
16. 16.True or false: a mirror reflects light well. (a) True (b) False
17. 17.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a rough wooden board (d) a dull brick
18. 18.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) a ruler (d) two small mirrors
21. 21.⚖️ 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) the angle of the mirrors (c) how clear the view is
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) yeast (d) sticky tape
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) a shiny steel plate (d) a mirror
27. 27.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
29. 29.True or false: a dull brick reflects light well. (a) False (b) True
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) yeast (d) a ruler
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) two small mirrors (d) a battery cell
33. 33.True or false: a mirror reflects light poorly. (a) True (b) False
34. 34.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a ruler (c) a pencil (d) sticky tape
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a magnet
38. 38.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees

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