Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 710 · 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: sticky tape is not needed for the periscope. (a) False (b) True
2. 2.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) still clear water (d) a mirror
3. 3.True or false: yeast is not needed for the periscope. (a) True (b) False
4. 4.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) vinegar (d) a battery cell
5. 5.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
6. 6.True or false: still clear water reflects light well. (a) False (b) True
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
10. 10.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same carton (c) the same light (d) the angle of the mirrors
12. 12.⚖️ 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
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
15. 15.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) aluminium foil
16. 16.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) sticky tape (d) a balloon
18. 18.⚖️ 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
19. 19.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) see over a wall (d) hear far sounds
20. 20.⚖️ 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
21. 21.⚖️ 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) True (b) False
22. 22.🔮 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
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
24. 24.⚖️ 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 change it (c) we measure it
25. 25.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a mirror
28. 28.True or false: a mirror reflects light poorly. (a) False (b) True
29. 29.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
30. 30.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
31. 31.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a shiny steel plate (d) aluminium foil
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) still clear water (d) black cloth
34. 34.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) an empty juice carton (d) turmeric powder
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a ruler (d) turmeric powder
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) sticky tape (d) vinegar
37. 37.⚖️ 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
38. 38.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
39. 39.True or false: aluminium foil reflects light poorly. (a) True (b) False
40. 40.True or false: sticky tape is needed for the periscope. (a) False (b) True

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