Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 703 · 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 of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) an empty juice carton (d) two small mirrors
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a ruler (d) an empty juice carton
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) sticky tape
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) a pencil
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.⚖️ 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
9. 9.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
10. 10.True or false: a ruler is needed for the periscope. (a) True (b) False
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
12. 12.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) an empty juice carton (d) a balloon
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
16. 16.True or false: a ruler is not needed for the periscope. (a) True (b) False
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) an empty juice carton (d) two small mirrors
18. 18.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
21. 21.⚖️ 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 object we look at (c) the angle of the mirrors
22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
23. 23.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) dark soil
25. 25.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
26. 26.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) dark soil
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) a pencil (d) a magnet
30. 30.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🧺 Which of these is needed for the periscope? (a) a magnet (b) sticky tape (c) a balloon (d) turmeric powder
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the object we look at (d) the angle of the mirrors
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a balloon (d) a pencil
37. 37.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a pencil (c) two small mirrors (d) sticky tape
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same

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