Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 903 · 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.True or false: a mirror reflects light poorly. (a) True (b) False
2. 2.True or false: a rough wooden board reflects light poorly. (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 angle of the mirrors (b) the same light (c) the same mirrors (d) the object we look at
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a battery cell (d) a pencil
5. 5.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) still clear water
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
8. 8.True or false: a ruler is not needed for the periscope. (a) False (b) True
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a pencil (d) a ruler
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
12. 12.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
13. 13.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
15. 15.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) only darkness (d) a rainbow
17. 17.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a pencil (d) a battery cell
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the same mirrors (c) how clear the view is (d) the angle of the mirrors
19. 19.⚖️ 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
20. 20.🔭 Which of these reflects light poorly? (a) aluminium foil (b) dark soil (c) a mirror (d) still clear water
21. 21.True or false: a dull brick reflects light well. (a) False (b) True
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.⚖️ 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
26. 26.🔭 How many times does light bounce off a mirror in a simple periscope?
27. 27.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
28. 28.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) black cloth (d) still clear water
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
33. 33.True or false: vinegar is needed for the periscope. (a) True (b) False
34. 34.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) a magnet
35. 35.⚖️ 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
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a pencil (d) turmeric powder
40. 40.True or false: two small mirrors is needed for the periscope. (a) False (b) True

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