Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 77 · 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.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
2. 2.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
4. 4.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) an empty juice carton (d) a balloon
6. 6.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) vinegar (d) an empty juice carton
7. 7.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) yeast (d) sticky tape
8. 8.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
9. 9.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.True or false: a balloon is needed for the periscope. (a) True (b) False
11. 11.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
14. 14.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) a dull brick
17. 17.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
19. 19.⚖️ 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 light
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
21. 21.True or false: a mirror reflects light well. (a) False (b) True
22. 22.True or false: still clear water reflects light poorly. (a) False (b) True
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) black cloth (d) dark soil
26. 26.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) dark soil
27. 27.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) still clear water (d) a rough wooden board
28. 28.🧺 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 magnet
29. 29.True or false: black cloth reflects light well. (a) True (b) False
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
31. 31.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
33. 33.⚖️ 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 same carton (c) the angle of the mirrors
34. 34.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) aluminium foil
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
36. 36.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) a dull brick (d) dark soil
37. 37.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a balloon (d) two small mirrors
38. 38.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
39. 39.True or false: a rough wooden board reflects light poorly. (a) False (b) True
40. 40.🧺 Which of these is needed for the periscope? (a) vinegar (b) a pencil (c) a magnet (d) a balloon

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