Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 712 · 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 is not needed for the periscope? (a) a ruler (b) a pencil (c) sticky tape (d) a magnet
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) a pencil (d) a ruler
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a balloon
7. 7.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
10. 10.True or false: a balloon is not needed for the periscope. (a) False (b) True
11. 11.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a brighter view (d) a rainbow
14. 14.True or false: a mirror reflects light well. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a dull brick
16. 16.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.True or false: aluminium foil reflects light poorly. (a) False (b) True
19. 19.True or false: still clear water reflects light poorly. (a) True (b) False
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) vinegar (d) sticky tape
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
22. 22.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) yeast (c) sticky tape (d) a ruler
23. 23.⚖️ 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 change it (c) we keep it the same
24. 24.True or false: a rough wooden board reflects light poorly. (a) False (b) True
25. 25.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) still clear water
26. 26.⚖️ 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 carton (c) the angle of the mirrors (d) the same mirrors
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) black cloth
28. 28.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a battery cell (c) vinegar (d) a magnet
30. 30.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
32. 32.⚖️ 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
33. 33.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a shiny steel plate
35. 35.⚖️ 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 carton (c) the object we look at (d) the angle of the mirrors
36. 36.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.True or false: sticky tape is not needed for the periscope. (a) False (b) True
38. 38.True or false: yeast is not needed for the periscope. (a) True (b) False
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
40. 40.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) dark soil

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