Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 608 · 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 is the odd one out? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) black cloth
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) turmeric powder (d) an empty juice carton
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
4. 4.True or false: vinegar is needed for the periscope. (a) False (b) True
5. 5.True or false: a pencil is needed for the periscope. (a) False (b) True
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.⚖️ 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
8. 8.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
10. 10.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a pencil
11. 11.True or false: a dull brick reflects light poorly. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.True or false: dark soil reflects light poorly. (a) False (b) True
14. 14.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) an empty juice carton (d) a magnet
15. 15.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) aluminium foil (d) still clear water
16. 16.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) a magnet (d) yeast
17. 17.⚖️ 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) False (b) True
18. 18.True or false: aluminium foil reflects light well. (a) False (b) True
19. 19.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) a ruler (d) an empty juice carton
20. 20.True or false: a magnet is needed for the periscope. (a) True (b) False
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same light
22. 22.True or false: two small mirrors is needed for the periscope. (a) True (b) False
23. 23.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a ruler (c) an empty juice carton (d) sticky tape
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
25. 25.⚖️ 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) how clear the view is (c) the object we look at
26. 26.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) black cloth (d) dark soil
27. 27.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) dark soil (d) a dull brick
28. 28.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
29. 29.True or false: black cloth reflects light well. (a) False (b) True
30. 30.⚖️ 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
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
32. 32.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) aluminium foil (d) a rough wooden board
33. 33.True or false: a dull brick reflects light well. (a) False (b) True
34. 34.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
37. 37.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) an empty juice carton (d) two small mirrors
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
40. 40.True or false: dark soil reflects light well. (a) True (b) False

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