Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 240 · 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) sticky tape (b) an empty juice carton (c) vinegar (d) two small mirrors
2. 2.True or false: still clear water reflects light well. (a) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a battery cell (d) an empty juice carton
4. 4.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) a balloon
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) dark soil (d) a rough wooden board
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a balloon
10. 10.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) still clear water
11. 11.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) taller walls (d) nothing at all
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
13. 13.⚖️ 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 carton (d) the same mirrors
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the same carton (d) the angle of the mirrors
15. 15.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a shiny steel plate (d) a mirror
16. 16.⚖️ 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
17. 17.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
18. 18.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
21. 21.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a rough wooden board (d) black cloth
22. 22.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a ruler (d) yeast
24. 24.True or false: vinegar is needed for the periscope. (a) True (b) False
25. 25.True or false: aluminium foil reflects light poorly. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a ruler (d) an empty juice carton
29. 29.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) still clear water (d) a dull brick
31. 31.🔭 How many times does light bounce off a mirror in a simple periscope?
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
34. 34.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
35. 35.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) black cloth
36. 36.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
37. 37.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) aluminium foil
38. 38.True or false: a battery cell is not needed for the periscope. (a) True (b) False
39. 39.🧺 Which of these is needed for the periscope? (a) a magnet (b) turmeric powder (c) a balloon (d) sticky tape
40. 40.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees

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