Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 403 · 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.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
3. 3.⚖️ 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
4. 4.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.⚖️ 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
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.⚖️ 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
8. 8.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) two small mirrors
12. 12.⚖️ 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
13. 13.True or false: aluminium foil reflects light poorly. (a) True (b) False
14. 14.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) a dull brick
15. 15.True or false: black cloth reflects light poorly. (a) False (b) True
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔮 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
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) an empty juice carton (c) a magnet (d) turmeric powder
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a ruler (d) a balloon
21. 21.⚖️ 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 mirrors (c) the angle of the mirrors (d) the object we look at
22. 22.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.⚖️ 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 object we look at (c) how clear the view is
24. 24.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a mirror
25. 25.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
26. 26.True or false: yeast is not needed for the periscope. (a) True (b) False
27. 27.⚖️ 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 angle of the mirrors (d) how clear the view is
28. 28.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
31. 31.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
33. 33.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) a shiny steel plate
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a ruler (d) vinegar
35. 35.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
36. 36.⚖️ 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
37. 37.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
39. 39.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) dark soil (c) a mirror (d) still clear water
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True

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