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Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 4 · 40 questions
TalentJR

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.

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  1. 1.True or false: a pencil is needed for the periscope. (a) False (b) True
  2. 2.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
  3. 3.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) aluminium foil (d) a rough wooden board
  4. 4.True or false: sticky tape is not needed for the periscope. (a) False (b) True
  5. 5.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) an empty juice carton (d) yeast
  6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a battery cell
  7. 7.True or false: aluminium foil reflects light well. (a) True (b) False
  8. 8.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) still clear water (d) a rough wooden board
  9. 9.⚖️ 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
  10. 10.🔭 How many mirrors does a simple periscope use?
  11. 11.⚖️ 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 angle of the mirrors (c) the object we look at (d) how clear the view is
  12. 12.True or false: a battery cell is not needed for the periscope. (a) False (b) True
  13. 13.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) sticky tape (d) a pencil
  14. 14.🧺 Which of these is not needed for the periscope? (a) a ruler (b) vinegar (c) sticky tape (d) a pencil
  15. 15.True or false: a rough wooden board reflects light poorly. (a) False (b) True
  16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a magnet (c) an empty juice carton (d) sticky tape
  17. 17.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
  18. 18.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) a pencil (d) vinegar
  19. 19.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
  20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) yeast (d) a ruler
  21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a magnet (d) a ruler
  22. 22.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
  23. 23.🔭 Which of these reflects light well? (a) dark soil (b) aluminium foil (c) black cloth (d) a dull brick
  24. 24.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
  25. 25.⚖️ 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 same carton (d) the angle of the mirrors
  26. 26.True or false: a mirror reflects light poorly. (a) True (b) False
  27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
  28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
  29. 29.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) vinegar (d) a balloon
  30. 30.True or false: a magnet is not needed for the periscope. (a) False (b) True
  31. 31.⚖️ 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 keep it the same (c) we measure it
  32. 32.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) an empty juice carton (d) sticky tape
  33. 33.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
  34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) two small mirrors (d) turmeric powder
  35. 35.⚖️ 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 measure it (c) we keep it the same
  36. 36.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
  37. 37.True or false: a shiny steel plate reflects light well. (a) False (b) True
  38. 38.True or false: black cloth reflects light well. (a) False (b) True
  39. 39.True or false: dark soil reflects light well. (a) True (b) False
  40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it

Answer key

  1. True
  2. not needed
  3. aluminium foil
  4. False
  5. an empty juice carton
  6. a battery cell
  7. True
  8. a rough wooden board
  9. True
  10. 2
  11. how clear the view is
  12. True
  13. a balloon
  14. vinegar
  15. True
  16. a magnet
  17. not needed
  18. a pencil
  19. True
  20. yeast
  21. a magnet
  22. plastic safety mirrors
  23. aluminium foil
  24. reflects light poorly
  25. the angle of the mirrors
  26. False
  27. 2
  28. 45 degrees
  29. sticky tape
  30. True
  31. we keep it the same
  32. yeast
  33. see over a wall
  34. turmeric powder
  35. we keep it the same
  36. False
  37. True
  38. False
  39. False
  40. we keep it the same

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