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Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 378 · 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.True or false: black cloth reflects light poorly. (a) False (b) True
  2. 2.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) a dull brick (d) black cloth
  3. 3.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
  4. 4.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
  5. 5.True or false: yeast is not needed for the periscope. (a) True (b) False
  6. 6.True or false: vinegar is needed for the periscope. (a) True (b) False
  7. 7.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
  8. 8.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
  9. 9.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
  10. 10.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a magnet (c) a battery cell (d) vinegar
  11. 11.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
  12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
  13. 13.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
  14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
  15. 15.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
  16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) turmeric powder (d) two small mirrors
  17. 17.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) sticky tape (c) vinegar (d) a battery cell
  18. 18.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
  19. 19.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
  20. 20.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
  21. 21.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
  22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) the same mirrors (d) how clear the view is
  23. 23.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
  24. 24.True or false: a shiny steel plate reflects light well. (a) True (b) False
  25. 25.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
  26. 26.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
  27. 27.True or false: still clear water reflects light well. (a) False (b) True
  28. 28.🔮 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
  29. 29.⚖️ 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) True (b) False
  30. 30.True or false: turmeric powder is needed for the periscope. (a) False (b) True
  31. 31.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
  32. 32.True or false: vinegar is not needed for the periscope. (a) False (b) True
  33. 33.🔭 How many mirrors does a simple periscope use?
  34. 34.True or false: a dull brick reflects light poorly. (a) True (b) False
  35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) only short walls (d) taller walls
  36. 36.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a dull brick (d) still clear water
  37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) vinegar (d) a ruler
  38. 38.⚖️ 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
  39. 39.True or false: a pencil is not needed for the periscope. (a) False (b) True
  40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) two small mirrors (c) a pencil (d) a ruler

Answer key

  1. True
  2. aluminium foil
  3. False
  4. reflection
  5. True
  6. False
  7. so light reaches the eye
  8. a rough wooden board
  9. reflects light poorly
  10. an empty juice carton
  11. see over a wall
  12. needed
  13. needed
  14. reflects light poorly
  15. reflects light well
  16. turmeric powder
  17. sticky tape
  18. not needed
  19. flipped left to right
  20. reflects light well
  21. a grown-up
  22. how clear the view is
  23. reflects light well
  24. True
  25. the Sun
  26. not needed
  27. True
  28. only darkness
  29. True
  30. False
  31. False
  32. True
  33. 2
  34. True
  35. taller walls
  36. a dull brick
  37. vinegar
  38. we keep it the same
  39. False
  40. yeast

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