Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 113 · 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 is the odd one out? (a) still clear water (b) dark soil (c) a dull brick (d) a rough wooden board
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same carton
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
7. 7.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) yeast
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) vinegar (d) a pencil
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) black cloth (d) dark soil
11. 11.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) dark soil (d) a rough wooden board
12. 12.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) turmeric powder (d) a pencil
13. 13.True or false: a mirror reflects light poorly. (a) True (b) False
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
15. 15.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
16. 16.True or false: black cloth reflects light well. (a) True (b) False
17. 17.⚖️ 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 change it (c) we keep it the same
18. 18.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) so it can float (d) to make it heavy
19. 19.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) aluminium foil
20. 20.True or false: yeast is needed for the periscope. (a) True (b) False
21. 21.⚖️ 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
22. 22.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
23. 23.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
26. 26.True or false: yeast is not needed for the periscope. (a) False (b) True
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
29. 29.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) a shiny steel plate (d) dark soil
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a magnet (d) a ruler
32. 32.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a mirror (d) still clear water
33. 33.True or false: a shiny steel plate reflects light well. (a) True (b) False
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.True or false: still clear water reflects light well. (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 angle of the mirrors”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: sticky tape is not needed for the periscope. (a) False (b) True
38. 38.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) aluminium foil
39. 39.True or false: a rough wooden board reflects light poorly. (a) True (b) False
40. 40.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors

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