Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 572 · 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: a rough wooden board reflects light poorly. (a) False (b) True
2. 2.⚖️ 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) False (b) True
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) only short walls (d) nothing at all
4. 4.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
5. 5.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) a magnet
7. 7.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) a mirror
8. 8.True or false: sticky tape is not needed for the periscope. (a) True (b) False
9. 9.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a magnet (d) a ruler
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) a shiny steel plate (d) still clear water
12. 12.⚖️ 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
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🔭 How many times does light bounce off a mirror in a simple periscope?
15. 15.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) vinegar (d) turmeric powder
16. 16.True or false: aluminium foil reflects light well. (a) True (b) False
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same light (c) the same mirrors (d) how clear the view is
18. 18.⚖️ 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) True (b) False
19. 19.True or false: vinegar is not needed for the periscope. (a) False (b) True
20. 20.🧺 Which of these is needed for the periscope? (a) a ruler (b) yeast (c) turmeric powder (d) a balloon
21. 21.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
22. 22.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
25. 25.⚖️ 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 angle of the mirrors (d) how clear the view is
26. 26.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) a ruler (d) a balloon
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a shiny steel plate
28. 28.True or false: a shiny steel plate reflects light well. (a) True (b) False
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) a ruler (d) two small mirrors
30. 30.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) vinegar
31. 31.True or false: dark soil reflects light well. (a) True (b) False
32. 32.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a pencil (d) yeast
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
34. 34.True or false: a magnet is not needed for the periscope. (a) True (b) False
35. 35.True or false: black cloth reflects light poorly. (a) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) turmeric powder
37. 37.True or false: aluminium foil reflects light poorly. (a) False (b) True
38. 38.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a mirror (d) dark soil
40. 40.True or false: two small mirrors is not needed for the periscope. (a) False (b) True

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