Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 129 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
2. 2.🧺 Which of these is needed for the periscope? (a) a pencil (b) a battery cell (c) a balloon (d) yeast
3. 3.True or false: dark soil reflects light poorly. (a) False (b) True
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) two small mirrors (d) a magnet
6. 6.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
7. 7.⚖️ 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
8. 8.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
10. 10.⚖️ 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 mirrors (b) how clear the view is (c) the same carton (d) the angle of the mirrors
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) a ruler (d) sticky tape
12. 12.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a balloon (d) a magnet
13. 13.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a ruler (c) sticky tape (d) two small mirrors
14. 14.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.True or false: black cloth reflects light poorly. (a) False (b) True
16. 16.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
17. 17.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.⚖️ 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 object we look at (c) how clear the view is
19. 19.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
20. 20.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
21. 21.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
22. 22.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a battery cell (d) two small mirrors
23. 23.⚖️ 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 keep it the same (b) we measure it (c) we change it
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.True or false: still clear water reflects light poorly. (a) False (b) True
26. 26.True or false: a pencil is needed for the periscope. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) aluminium foil
28. 28.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a rough wooden board (d) a dull brick
29. 29.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
31. 31.True or false: yeast is not needed for the periscope. (a) True (b) False
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
33. 33.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a rough wooden board
34. 34.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.True or false: a mirror reflects light well. (a) True (b) False
37. 37.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
38. 38.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) a ruler (d) a pencil
39. 39.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
40. 40.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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