Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 30 · 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) an empty juice carton (b) a balloon (c) a ruler (d) two small mirrors
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
3. 3.⚖️ 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 change it (c) we measure it
4. 4.🔮 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
5. 5.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a balloon (d) an empty juice carton
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
8. 8.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) still clear water (d) black cloth
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
10. 10.True or false: a battery cell is needed for the periscope. (a) True (b) False
11. 11.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) yeast (d) an empty juice carton
12. 12.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
13. 13.True or false: aluminium foil reflects light poorly. (a) True (b) False
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
15. 15.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) black cloth (d) a dull brick
18. 18.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) a rough wooden board (d) dark soil
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) a pencil (d) a ruler
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) yeast (d) a ruler
21. 21.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
22. 22.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) black cloth (d) still clear water
23. 23.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
27. 27.True or false: a balloon is needed for the periscope. (a) False (b) True
28. 28.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) a ruler (d) two small mirrors
31. 31.⚖️ 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 same mirrors
32. 32.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) a shiny steel plate
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) much bigger (d) upside down only
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same mirrors (c) how clear the view is (d) the same carton
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) a mirror
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.True or false: yeast is not needed for the periscope. (a) False (b) True
38. 38.🔭 How many mirrors does a simple periscope use?
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) False (b) True
40. 40.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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