Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 331 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a balloon (d) a ruler
4. 4.⚖️ 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
5. 5.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
8. 8.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
9. 9.True or false: a battery cell is needed for the periscope. (a) True (b) False
10. 10.🧺 Which of these is needed for the periscope? (a) a pencil (b) a battery cell (c) vinegar (d) a balloon
11. 11.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
12. 12.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) turmeric powder (d) a ruler
14. 14.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
15. 15.⚖️ 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
16. 16.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same light (d) the same carton
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
19. 19.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a mirror (d) aluminium foil
20. 20.🔭 How many times does light bounce off a mirror in a simple periscope?
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) aluminium foil (d) a mirror
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) a battery cell
25. 25.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) dark soil (d) a dull brick
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
27. 27.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) vinegar (d) a pencil
29. 29.True or false: yeast is needed for the periscope. (a) False (b) True
30. 30.⚖️ 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) how clear the view is (c) the angle of the mirrors
31. 31.True or false: a magnet is needed for the periscope. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) black cloth
34. 34.⚖️ 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 angle of the mirrors (c) the same carton
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a balloon (d) two small mirrors
36. 36.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
37. 37.True or false: turmeric powder is needed for the periscope. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: dark soil reflects light well. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) aluminium foil

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