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Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 552 · 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.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) black cloth (d) dark soil
  2. 2.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a magnet (c) yeast (d) two small mirrors
  3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
  4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
  5. 5.🔭 How many mirrors does a simple periscope use?
  6. 6.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a pencil (d) sticky tape
  7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
  8. 8.True or false: still clear water reflects light poorly. (a) True (b) False
  9. 9.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board
  10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
  11. 11.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) still clear water (d) a dull brick
  12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
  13. 13.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
  14. 14.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) black cloth (d) aluminium foil
  15. 15.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
  16. 16.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
  17. 17.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
  18. 18.🔮 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
  19. 19.True or false: two small mirrors 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) an empty juice carton (b) a pencil (c) vinegar (d) a ruler
  21. 21.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
  22. 22.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
  23. 23.True or false: still clear water reflects light well. (a) True (b) False
  24. 24.True or false: a dull brick reflects light well. (a) True (b) False
  25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
  26. 26.True or false: dark soil reflects light well. (a) False (b) True
  27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) two small mirrors (d) an empty juice carton
  28. 28.True or false: a mirror reflects light well. (a) False (b) True
  29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
  30. 30.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
  31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) a ruler (d) a pencil
  32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) a balloon
  33. 33.⚖️ 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) how clear the view is (c) the object we look at (d) the same carton
  34. 34.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
  35. 35.🔭 Which of these reflects light poorly? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) aluminium foil
  36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
  37. 37.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) sticky tape (d) turmeric powder
  38. 38.True or false: a pencil is needed for the periscope. (a) False (b) True
  39. 39.True or false: black cloth reflects light well. (a) True (b) False
  40. 40.⚖️ 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) True (b) False

Answer key

  1. a mirror
  2. two small mirrors
  3. flipped left to right
  4. so light reaches the eye
  5. 2
  6. a balloon
  7. False
  8. False
  9. a shiny steel plate
  10. True
  11. still clear water
  12. False
  13. not needed
  14. aluminium foil
  15. a grown-up
  16. plastic safety mirrors
  17. needed
  18. taller walls
  19. True
  20. vinegar
  21. needed
  22. a dull brick
  23. True
  24. False
  25. needed
  26. False
  27. turmeric powder
  28. True
  29. only darkness
  30. reflects light well
  31. a magnet
  32. a balloon
  33. how clear the view is
  34. not needed
  35. a dull brick
  36. False
  37. sticky tape
  38. True
  39. False
  40. True

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