Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 519 · 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 needed for the periscope? (a) a battery cell (b) two small mirrors (c) turmeric powder (d) vinegar
2. 2.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
3. 3.True or false: dark soil reflects light well. (a) True (b) False
4. 4.⚖️ 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 carton (c) the same light (d) the object we look at
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) sticky tape (d) an empty juice carton
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) turmeric powder (d) an empty juice carton
7. 7.🔮 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
8. 8.True or false: a balloon is not needed for the periscope. (a) True (b) False
9. 9.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.⚖️ 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) how clear the view is (c) the same carton
11. 11.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) turmeric powder (d) sticky tape
12. 12.True or false: a dull brick reflects light poorly. (a) True (b) False
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
14. 14.True or false: vinegar is needed for the periscope. (a) False (b) True
15. 15.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
17. 17.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the angle of the mirrors (c) how clear the view is (d) the same mirrors
19. 19.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a dull brick (d) a rough wooden board
20. 20.⚖️ 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
21. 21.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
23. 23.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a baker (c) a pilot in a plane (d) a farmer
24. 24.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) still clear water
25. 25.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.⚖️ 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 change it (c) we measure it
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a balloon
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.True or false: still clear water reflects light poorly. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) a shiny steel plate
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (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 mirrors”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🔭 How many times does light bounce off a mirror in a simple periscope?
38. 38.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a dull brick (d) a rough wooden board
39. 39.True or false: sticky tape is not needed for the periscope. (a) False (b) True
40. 40.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) a dull brick

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