Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 898 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔮 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
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a ruler (d) a pencil
6. 6.True or false: a magnet is needed for the periscope. (a) True (b) False
7. 7.True or false: a dull brick reflects light well. (a) False (b) True
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
10. 10.True or false: vinegar is needed for the periscope. (a) True (b) False
11. 11.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a dull brick (d) dark soil
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) sticky tape (d) a ruler
15. 15.True or false: a mirror reflects light well. (a) False (b) True
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) vinegar (d) two small mirrors
17. 17.True or false: aluminium foil reflects light well. (a) False (b) True
18. 18.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.⚖️ 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
20. 20.True or false: yeast is needed for the periscope. (a) True (b) False
21. 21.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) turmeric powder (d) a pencil
24. 24.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) a ruler (d) sticky tape
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil (d) sticky tape
26. 26.⚖️ 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
27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
28. 28.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
29. 29.True or false: still clear water reflects light well. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a mirror (d) aluminium foil
31. 31.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the object we look at (d) the angle of the mirrors
33. 33.⚖️ 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
34. 34.True or false: a rough wooden board reflects light poorly. (a) False (b) True
35. 35.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) turmeric powder (d) an empty juice carton
36. 36.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) vinegar (d) a battery cell
37. 37.⚖️ 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 mirrors (c) the angle of the mirrors (d) the same light
38. 38.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) a shiny steel plate
39. 39.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) a rough wooden board
40. 40.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) a dull brick (d) black cloth

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