Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 429 · 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.🧺 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) two small mirrors
2. 2.True or false: a ruler is not needed for the periscope. (a) False (b) True
3. 3.True or false: a balloon is needed for the periscope. (a) False (b) True
4. 4.True or false: black cloth reflects light well. (a) True (b) False
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) an empty juice carton (d) a ruler
6. 6.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) an empty juice carton (d) a magnet
8. 8.True or false: a battery cell is not needed for the periscope. (a) False (b) True
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
11. 11.🔭 How many times does light bounce off a mirror in a simple periscope?
12. 12.⚖️ 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) False (b) True
13. 13.⚖️ 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
14. 14.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) a ruler (d) a pencil
15. 15.True or false: sticky tape is needed for the periscope. (a) False (b) True
16. 16.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) dark soil (d) a dull brick
17. 17.⚖️ 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
18. 18.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) black cloth
19. 19.⚖️ 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
20. 20.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a pencil (d) yeast
22. 22.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) vinegar (d) two small mirrors
24. 24.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
25. 25.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) sticky tape (d) a balloon
26. 26.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) a pencil (d) a battery cell
27. 27.True or false: a mirror reflects light well. (a) True (b) False
28. 28.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) a magnet
29. 29.True or false: dark soil reflects light poorly. (a) False (b) True
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.True or false: yeast is needed for the periscope. (a) True (b) False
32. 32.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
33. 33.True or false: vinegar is not needed for the periscope. (a) False (b) True
34. 34.True or false: two small mirrors is needed for the periscope. (a) False (b) True
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same light
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
38. 38.⚖️ 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 mirrors
39. 39.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
40. 40.True or false: a pencil is not needed for the periscope. (a) True (b) False

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