Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 435 · 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.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) a dull brick
4. 4.True or false: yeast is not needed for the periscope. (a) True (b) False
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.True or false: turmeric powder is needed for the periscope. (a) True (b) False
7. 7.⚖️ 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
8. 8.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) black cloth
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) turmeric powder
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
11. 11.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) a ruler (d) two small mirrors
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a ruler (d) two small mirrors
13. 13.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) two small mirrors (d) a pencil
15. 15.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) sticky tape (d) a pencil
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same mirrors (c) the object we look at (d) how clear the view is
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
18. 18.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
19. 19.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror
20. 20.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a ruler (d) a magnet
21. 21.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
22. 22.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) vinegar (d) a pencil
24. 24.🔭 How many times does light bounce off a mirror in a simple periscope?
25. 25.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) a dull brick
26. 26.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
27. 27.⚖️ 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 same mirrors (c) the angle of the mirrors
28. 28.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) dark soil (d) a dull brick
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
30. 30.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) yeast (d) a pencil
31. 31.⚖️ 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 measure it (c) we change it
32. 32.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.True or false: a battery cell is needed for the periscope. (a) True (b) False
34. 34.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
35. 35.True or false: a magnet is needed for the periscope. (a) False (b) True
36. 36.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a battery cell (d) sticky tape
38. 38.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
40. 40.⚖️ 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

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