Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 667 · 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.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
2. 2.True or false: sticky tape is needed for the periscope. (a) True (b) False
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the same light (d) the angle of the mirrors
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔭 Which of these reflects light well? (a) aluminium foil (b) a rough wooden board (c) dark soil (d) black cloth
6. 6.True or false: a rough wooden board reflects light well. (a) False (b) True
7. 7.True or false: a ruler is 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 “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.⚖️ 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 object we look at (d) how clear the view is
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a pencil (d) an empty juice carton
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
14. 14.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
15. 15.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.⚖️ 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) True (b) False
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) two small mirrors (d) an empty juice carton
22. 22.True or false: a magnet is not needed for the periscope. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) two small mirrors
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a pencil (d) two small mirrors
27. 27.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) vinegar (d) yeast
28. 28.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) aluminium foil
31. 31.True or false: a balloon is needed for the periscope. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) dark soil (d) still clear water
33. 33.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
34. 34.True or false: a balloon is not needed for the periscope. (a) True (b) False
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
36. 36.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
37. 37.True or false: a battery cell is not needed for the periscope. (a) True (b) False
38. 38.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a shiny steel plate (d) black cloth
39. 39.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a pencil (d) vinegar
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True

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