Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 592 · 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.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) black cloth (d) still clear water
2. 2.⚖️ 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 light (c) the object we look at (d) how clear the view is
3. 3.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate
4. 4.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
5. 5.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
6. 6.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
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.⚖️ 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) False (b) True
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at
12. 12.⚖️ 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) False (b) True
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
14. 14.⚖️ 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
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.True or false: yeast is needed for the periscope. (a) True (b) False
19. 19.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
20. 20.True or false: a rough wooden board reflects light well. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) sticky tape (d) a pencil
23. 23.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
24. 24.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
25. 25.True or false: turmeric powder is needed for the periscope. (a) False (b) True
26. 26.True or false: dark soil reflects light well. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) a mirror
28. 28.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
29. 29.True or false: a mirror reflects light well. (a) True (b) False
30. 30.True or false: still clear water reflects light poorly. (a) True (b) False
31. 31.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) vinegar (d) yeast
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🔮 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
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a friend’s toy (d) a tree
37. 37.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) a magnet (d) a ruler
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
40. 40.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane

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