Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 259 · 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 reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) still clear water
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
3. 3.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
4. 4.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
6. 6.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
7. 7.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) a battery cell (d) a magnet
8. 8.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🧺 Which of these is not needed for the periscope? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
10. 10.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) a pencil (d) an empty juice carton
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.True or false: aluminium foil reflects light poorly. (a) False (b) True
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
16. 16.⚖️ 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 light (c) the same carton (d) how clear the view is
17. 17.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water
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) False (b) True
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.True or false: still clear water reflects light poorly. (a) True (b) False
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
22. 22.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
23. 23.True or false: black cloth reflects light well. (a) True (b) False
24. 24.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) two small mirrors (d) a magnet
25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
27. 27.⚖️ 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
28. 28.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.True or false: a shiny steel plate reflects light well. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
33. 33.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) an empty juice carton (d) a ruler
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) two small mirrors
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) sticky tape (d) two small mirrors
38. 38.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a pencil (d) vinegar
39. 39.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) vinegar (d) yeast

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