Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 493 · 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? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the same carton
2. 2.True or false: vinegar is needed for the periscope. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a rough wooden board (d) black cloth
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) a ruler (d) sticky tape
6. 6.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a ruler (d) a magnet
9. 9.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a dull brick (d) still clear water
10. 10.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.⚖️ 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
12. 12.True or false: black cloth reflects light well. (a) False (b) True
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a battery cell
15. 15.🧺 Which of these is needed for the periscope? (a) sticky tape (b) yeast (c) vinegar (d) a balloon
16. 16.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a magnet (d) an empty juice carton
17. 17.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a dull brick
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
22. 22.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) black cloth (d) still clear water
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
27. 27.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) a shiny steel plate
28. 28.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
29. 29.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) upside down only (d) much bigger
30. 30.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
31. 31.True or false: a dull brick reflects light poorly. (a) False (b) True
32. 32.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
33. 33.🧺 Which of these is not needed for the periscope? (a) a ruler (b) yeast (c) two small mirrors (d) sticky tape
34. 34.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a pencil (c) an empty juice carton (d) a ruler
35. 35.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) still clear water
37. 37.⚖️ 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
38. 38.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
39. 39.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a rough wooden board (d) a dull brick
40. 40.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) two small mirrors (d) an empty juice carton

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