Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 850 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
2. 2.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
3. 3.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
5. 5.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
7. 7.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so light reaches the eye (d) so it can float
9. 9.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same carton
11. 11.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.⚖️ 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
14. 14.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
15. 15.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
17. 17.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a pencil (d) a ruler
19. 19.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
20. 20.⚖️ 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
21. 21.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) turmeric powder (d) a pencil
24. 24.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a mirror
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) black cloth (d) still clear water
27. 27.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) dark soil (d) a rough wooden board
28. 28.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) a battery cell (d) turmeric powder
29. 29.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.True or false: dark soil reflects light well. (a) True (b) False
31. 31.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a wall (d) a tree
33. 33.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) a dull brick
34. 34.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.True or false: vinegar is not needed for the periscope. (a) False (b) True
38. 38.True or false: sticky tape is needed for the periscope. (a) True (b) False
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) a ruler (d) two small mirrors
40. 40.True or false: turmeric powder is not needed for the periscope. (a) False (b) True

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