Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 766 · 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 dull brick reflects light poorly. (a) False (b) True
2. 2.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
3. 3.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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 same carton (b) the same light (c) the same mirrors (d) the angle of the mirrors
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
7. 7.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
8. 8.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
9. 9.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
10. 10.⚖️ 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) False (b) True
11. 11.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) a magnet
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil (d) two small mirrors
17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) dark soil (d) a rough wooden board
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) sticky tape (d) a pencil
21. 21.True or false: still clear water reflects light well. (a) True (b) False
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.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a shiny steel plate (d) a mirror
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a magnet (d) sticky tape
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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 change it (b) we keep it the same (c) we measure it
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) an empty juice carton (d) a magnet
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the same carton (d) the angle of the mirrors
30. 30.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) yeast (d) sticky tape
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) two pictures (d) a rainbow
34. 34.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
36. 36.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) dark soil (d) black cloth
38. 38.True or false: a balloon is needed for the periscope. (a) False (b) True
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a balloon
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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