Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 634 · 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) a ruler (c) a pencil (d) a magnet
2. 2.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) a ruler (d) a pencil
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
7. 7.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) a ruler (d) a pencil
8. 8.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a rough wooden board
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
10. 10.True or false: vinegar is not needed for the periscope. (a) True (b) False
11. 11.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.True or false: a rough wooden board reflects light poorly. (a) True (b) False
14. 14.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) a dull brick
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) so it can float (d) to make it heavy
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
17. 17.🧺 Which of these is needed for the periscope? (a) vinegar (b) a ruler (c) a magnet (d) turmeric powder
18. 18.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
19. 19.True or false: a pencil is not needed for the periscope. (a) False (b) True
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? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a ruler (d) turmeric powder
25. 25.True or false: a mirror reflects light well. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a rough wooden board (d) black cloth
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a battery cell (d) an empty juice carton
28. 28.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
29. 29.True or false: dark soil reflects light well. (a) False (b) True
30. 30.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
32. 32.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) black cloth
33. 33.🔭 How many times does light bounce off a mirror in a simple periscope?
34. 34.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil (d) an empty juice carton
39. 39.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False

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