Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 575 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) aluminium foil
5. 5.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) nothing at all (d) taller walls
8. 8.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) a shiny steel plate
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
10. 10.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) dark soil (d) aluminium foil
11. 11.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) a mirror
14. 14.True or false: a shiny steel plate reflects light well. (a) True (b) False
15. 15.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
16. 16.True or false: a ruler is needed for the periscope. (a) False (b) True
17. 17.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) black cloth
19. 19.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.🛟 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
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a battery cell (d) a ruler
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) sticky tape (c) two small mirrors (d) a ruler
24. 24.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
25. 25.True or false: a rough wooden board reflects light poorly. (a) True (b) False
26. 26.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
28. 28.True or false: yeast is not needed for the periscope. (a) True (b) False
29. 29.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a mirror (d) a shiny steel plate
30. 30.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
31. 31.True or false: a battery cell is not needed for the periscope. (a) True (b) False
32. 32.⚖️ 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 carton (c) the same light (d) how clear the view is
33. 33.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) a magnet
34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) sticky tape (d) a pencil
36. 36.⚖️ 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 object we look at (c) the same light (d) the same mirrors
37. 37.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
38. 38.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
39. 39.True or false: sticky tape is needed for the periscope. (a) True (b) False
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False

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