Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 70 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
2. 2.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
3. 3.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) still clear water
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
6. 6.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) a dull brick (d) a rough wooden board
7. 7.True or false: sticky tape is not needed for the periscope. (a) True (b) False
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
10. 10.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
11. 11.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is
13. 13.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
14. 14.True or false: still clear water reflects light well. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) a shiny steel plate
16. 16.True or false: a rough wooden board reflects light well. (a) True (b) False
17. 17.⚖️ 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
18. 18.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
19. 19.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) an empty juice carton (d) vinegar
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
22. 22.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
23. 23.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
24. 24.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Which of these is needed for the periscope? (a) a pencil (b) yeast (c) a magnet (d) a balloon
27. 27.⚖️ 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
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a friend’s toy (d) a wall
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) sticky tape (d) an empty juice carton
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a balloon (d) a ruler
31. 31.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.⚖️ 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) the angle of the mirrors (c) the same light (d) the same carton
33. 33.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) a pencil (d) an empty juice carton
35. 35.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
36. 36.⚖️ 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 object we look at (d) the same light
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
39. 39.True or false: aluminium foil reflects light poorly. (a) False (b) True
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) vinegar (d) a magnet

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