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Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 39 · 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 is needed for the periscope? (a) a battery cell (b) vinegar (c) a pencil (d) a magnet
  2. 2.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) sticky tape (d) a balloon
  3. 3.True or false: yeast is not needed for the periscope. (a) True (b) False
  4. 4.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
  5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a ruler (d) yeast
  6. 6.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
  7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) the ground (d) only short walls
  8. 8.🔭 How many mirrors does a simple periscope use?
  9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
  10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
  11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) a mirror
  12. 12.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) a mirror
  13. 13.True or false: black cloth reflects light poorly. (a) True (b) False
  14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a balloon (d) sticky tape
  15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) an empty juice carton (d) vinegar
  16. 16.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
  17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
  18. 18.True or false: a balloon is not needed for the periscope. (a) False (b) True
  19. 19.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
  20. 20.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water
  21. 21.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
  22. 22.True or false: a mirror reflects light well. (a) False (b) True
  23. 23.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a dull brick (d) still clear water
  24. 24.⚖️ 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
  25. 25.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
  26. 26.True or false: yeast is needed for the periscope. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) a rough wooden board
  28. 28.🔭 How many times does light bounce off a mirror in a simple periscope?
  29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) a mirror (d) still clear water
  30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
  31. 31.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
  32. 32.🔭 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
  33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a ruler (d) two small mirrors
  34. 34.True or false: a ruler is needed for the periscope. (a) False (b) True
  35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) True (b) False
  36. 36.⚖️ 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
  37. 37.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) a ruler
  38. 38.True or false: still clear water reflects light well. (a) False (b) True
  39. 39.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
  40. 40.⚖️ 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

Answer key

  1. a pencil
  2. sticky tape
  3. True
  4. a dull brick
  5. a ruler
  6. a rough wooden board
  7. taller walls
  8. 2
  9. only darkness
  10. reflects light well
  11. dark soil
  12. a mirror
  13. True
  14. a balloon
  15. vinegar
  16. a grown-up
  17. we change it
  18. True
  19. not needed
  20. still clear water
  21. reflection
  22. True
  23. a dull brick
  24. True
  25. see over a wall
  26. False
  27. a shiny steel plate
  28. 2
  29. black cloth
  30. the same mirrors
  31. needed
  32. so light reaches the eye
  33. turmeric powder
  34. True
  35. False
  36. we keep it the same
  37. a magnet
  38. True
  39. needed
  40. True

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