Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 870 · 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) two small mirrors (b) sticky tape (c) a ruler (d) a magnet
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a pencil (d) turmeric powder
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) a mirror (d) still clear water
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) how clear the view is (d) the angle of the mirrors
8. 8.True or false: a battery cell is not needed for the periscope. (a) True (b) False
9. 9.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a pilot in a plane (d) a submarine crew
10. 10.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) yeast (d) an empty juice carton
11. 11.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
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.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
19. 19.True or false: turmeric powder is needed for the periscope. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) a mirror (d) a shiny steel plate
21. 21.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a balloon
24. 24.True or false: black cloth reflects light well. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) black cloth
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 same light (c) the angle of the mirrors
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a mirror (d) aluminium foil
30. 30.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
32. 32.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) sticky tape (d) vinegar
33. 33.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) a mirror
34. 34.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
36. 36.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
39. 39.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a balloon (d) a pencil
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False

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