Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 367 · 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.⚖️ 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 measure it (c) we keep it the same
2. 2.True or false: a balloon is not needed for the periscope. (a) False (b) True
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
4. 4.True or false: a magnet is needed for the periscope. (a) False (b) True
5. 5.True or false: a shiny steel plate reflects light well. (a) False (b) True
6. 6.True or false: aluminium foil reflects light poorly. (a) True (b) False
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a rough wooden board (d) a dull brick
9. 9.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
10. 10.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.True or false: two small mirrors is needed for the periscope. (a) False (b) True
12. 12.🔭 How many mirrors does a simple periscope use?
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.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
15. 15.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a battery cell (d) two small mirrors
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 object we look at (b) the same mirrors (c) the same light (d) the angle of the mirrors
17. 17.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
21. 21.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) aluminium foil (d) a rough wooden board
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a ruler
23. 23.True or false: a pencil is not needed for the periscope. (a) True (b) False
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) two small mirrors (d) sticky tape
25. 25.True or false: vinegar is needed for the periscope. (a) False (b) True
26. 26.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
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 change it (b) we measure it (c) we keep it the same
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
30. 30.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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) an empty juice carton
32. 32.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) yeast
33. 33.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a balloon (d) a ruler
37. 37.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
38. 38.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
39. 39.True or false: black cloth reflects light poorly. (a) True (b) False
40. 40.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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