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Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 835 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🛟 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
  2. 2.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) still clear water (d) aluminium foil
  3. 3.True or false: black cloth reflects light poorly. (a) True (b) False
  4. 4.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
  5. 5.🔭 How many mirrors does a simple periscope use?
  6. 6.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
  7. 7.True or false: a rough wooden board reflects light poorly. (a) True (b) False
  8. 8.⚖️ 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
  9. 9.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) vinegar (d) turmeric powder
  10. 10.True or false: a shiny steel plate reflects light well. (a) True (b) False
  11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
  12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
  13. 13.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
  14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same light
  15. 15.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) vinegar (c) sticky tape (d) two small mirrors
  16. 16.True or false: a magnet is not needed for the periscope. (a) True (b) False
  17. 17.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a shiny steel plate (d) a mirror
  18. 18.⚖️ 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 object we look at (c) the angle of the mirrors
  19. 19.True or false: still clear water reflects light poorly. (a) True (b) False
  20. 20.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a dull brick (d) black cloth
  21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
  22. 22.True or false: dark soil reflects light well. (a) False (b) True
  23. 23.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) aluminium foil (d) a shiny steel plate
  24. 24.True or false: a mirror reflects light well. (a) False (b) True
  25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
  26. 26.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) dark soil
  27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) an empty juice carton (c) a ruler (d) sticky tape
  28. 28.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
  29. 29.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) still clear water (d) a mirror
  30. 30.🔭 How many times does light bounce off a mirror in a simple periscope?
  31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
  32. 32.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) turmeric powder (d) two small mirrors
  33. 33.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
  34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
  35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
  36. 36.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) a dull brick (d) black cloth
  37. 37.True or false: a balloon is needed for the periscope. (a) False (b) True
  38. 38.True or false: turmeric powder is needed for the periscope. (a) False (b) True
  39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) sticky tape (d) an empty juice carton
  40. 40.⚖️ 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

Answer key

  1. plastic safety mirrors
  2. dark soil
  3. True
  4. reflection
  5. 2
  6. so light reaches the eye
  7. True
  8. we keep it the same
  9. two small mirrors
  10. True
  11. the Sun
  12. needed
  13. True
  14. the same light
  15. vinegar
  16. True
  17. a rough wooden board
  18. the object we look at
  19. False
  20. a mirror
  21. taller walls
  22. False
  23. black cloth
  24. True
  25. False
  26. dark soil
  27. a magnet
  28. not needed
  29. black cloth
  30. 2
  31. False
  32. turmeric powder
  33. a mirror
  34. the same carton
  35. needed
  36. a shiny steel plate
  37. False
  38. False
  39. vinegar
  40. True

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