Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 538 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) two small mirrors (d) sticky tape
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
3. 3.⚖️ 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 object we look at (c) the angle of the mirrors
4. 4.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
5. 5.True or false: a ruler is not needed for the periscope. (a) False (b) True
6. 6.True or false: black cloth reflects light well. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a mirror (d) a rough wooden board
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same light (c) how clear the view is
10. 10.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) black cloth
11. 11.True or false: still clear water reflects light poorly. (a) False (b) True
12. 12.True or false: aluminium foil reflects light well. (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 measure it (b) we change it (c) we keep it the same
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
17. 17.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) black cloth (d) a rough wooden board
18. 18.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.True or false: vinegar is needed for the periscope. (a) False (b) True
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a ruler (d) a pencil
23. 23.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) yeast (d) sticky tape
26. 26.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
27. 27.True or false: sticky tape is not needed for the periscope. (a) False (b) True
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) a rough wooden board
30. 30.⚖️ 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) True (b) False
31. 31.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) a balloon (d) yeast
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) two small mirrors (d) a pencil
35. 35.⚖️ 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 angle of the mirrors (c) the same carton (d) the object we look at
36. 36.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) sticky tape (d) an empty juice carton
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 change it (c) we keep it the same
38. 38.True or false: dark soil reflects light well. (a) True (b) False
39. 39.True or false: turmeric powder is needed for the periscope. (a) True (b) False
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same carton (c) how clear the view is (d) the same light

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