Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 601 · 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 object we look at is the one thing we change. (a) True (b) False
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) an empty juice carton (d) two small mirrors
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) two small mirrors (d) a pencil
4. 4.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a dull brick
5. 5.True or false: a dull brick reflects light poorly. (a) True (b) False
6. 6.⚖️ 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 carton (b) the same light (c) the same mirrors (d) the angle of the mirrors
7. 7.🔮 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
8. 8.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) black cloth (d) aluminium foil
9. 9.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a balloon (d) sticky tape
10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) in colour (d) upside down only
12. 12.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
13. 13.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) a pencil (d) sticky tape
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) a battery cell (d) vinegar
16. 16.🧺 Which of these is needed for the periscope? (a) a pencil (b) a magnet (c) a battery cell (d) a balloon
17. 17.🔭 Does dark soil 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? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
20. 20.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) a ruler (d) an empty juice carton
23. 23.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) aluminium foil
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 change it (b) we measure it (c) we keep it the same
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
26. 26.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a submarine crew (d) a pilot in a plane
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
29. 29.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) dark soil (d) a shiny steel plate
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
32. 32.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
33. 33.True or false: a shiny steel plate reflects light well. (a) False (b) True
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
35. 35.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a rough wooden board (d) a shiny steel plate
39. 39.⚖️ 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 angle of the mirrors (c) the same carton (d) how clear the view is
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False

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