Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 828 · 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) two small mirrors (b) a magnet (c) a pencil (d) an empty juice carton
2. 2.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) a rough wooden board (d) dark soil
3. 3.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a ruler (c) two small mirrors (d) an empty juice carton
4. 4.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
5. 5.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) dark soil
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
9. 9.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) two small mirrors (d) a ruler
10. 10.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
12. 12.True or false: a balloon is needed for the periscope. (a) True (b) False
13. 13.⚖️ 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
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a rough wooden board
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) a balloon
18. 18.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) turmeric powder (d) a balloon
21. 21.⚖️ 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
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
24. 24.⚖️ 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) the angle of the mirrors (d) how clear the view is
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) a battery cell
26. 26.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) a shiny steel plate (d) a mirror
27. 27.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
29. 29.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🧺 Which of these is needed for the periscope? (a) a magnet (b) a ruler (c) yeast (d) a balloon
31. 31.True or false: dark soil reflects light poorly. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same mirrors (c) the angle of the mirrors (d) the object we look at
33. 33.⚖️ 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
34. 34.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
35. 35.True or false: a mirror reflects light well. (a) False (b) True
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a balloon (d) sticky tape
37. 37.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
38. 38.🔮 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
39. 39.⚖️ 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) True (b) False
40. 40.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True

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