Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 764 · 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.True or false: dark soil reflects light poorly. (a) False (b) True
2. 2.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a shiny steel plate (d) dark soil
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) aluminium foil
7. 7.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a balloon (d) sticky tape
8. 8.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) yeast (c) a balloon (d) a battery cell
9. 9.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a dull brick
10. 10.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a dull brick (d) a rough wooden board
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.True or false: a balloon is not needed for the periscope. (a) True (b) False
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 90 degrees (d) 180 degrees
16. 16.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
17. 17.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
18. 18.True or false: yeast is not needed for the periscope. (a) False (b) True
19. 19.⚖️ 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
20. 20.True or false: still clear water reflects light poorly. (a) False (b) True
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
22. 22.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) a balloon
24. 24.True or false: a rough wooden board reflects light poorly. (a) False (b) True
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a balloon
26. 26.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
27. 27.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
28. 28.True or false: yeast is needed for the periscope. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) aluminium foil
30. 30.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.True or false: a rough wooden board reflects light well. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: aluminium foil reflects light well. (a) True (b) False
34. 34.⚖️ 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 angle of the mirrors (d) how clear the view is
35. 35.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
36. 36.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
37. 37.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.True or false: sticky tape is not needed for the periscope. (a) True (b) False

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