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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 454 · 40 questions
TalentJR

What you do (Only the length matters): 1. Tie the nut to the string and hang it from the taped pencil, 30 cm long. 2. Pull it a little to one side and let go — do not push. 3. Time 10 swings and divide by 10. 4. Change only the string length (60 cm), time 10 swings again, and stand back from the bob.

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  1. 1.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  2. 2.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we measure it (b) we change it (c) we keep it the same
  4. 4.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a heavy nut or washer (d) a string
  6. 6.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  7. 7.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
  9. 9.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  10. 10.True or false: yeast is not needed for the pendulum. (a) True (b) False
  11. 11.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  12. 12.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  13. 13.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) it stops swinging (d) yes, much slower
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
  15. 15.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a heavy nut or washer (d) a mirror
  16. 16.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  17. 17.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a ruler (d) a string
  18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a pencil and tape (d) a balloon
  19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
  20. 20.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
  21. 21.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a string (d) a ruler
  22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
  23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
  24. 24.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
  26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  27. 27.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) the string (d) magnetism
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) time for 10 swings (d) the weight of the bob
  30. 30.True or false: a string is needed for the pendulum. (a) True (b) False
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a pencil and tape (d) a string
  32. 32.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
  33. 33.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  34. 34.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
  35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
  36. 36.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) yeast (d) a battery cell
  37. 37.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  38. 38.True or false: a magnet is needed for the pendulum. (a) True (b) False
  39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
  40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a string (d) a stopwatch

Answer key

  1. needed
  2. 7
  3. we keep it the same
  4. not needed
  5. a magnet
  6. 3
  7. True
  8. True
  9. False
  10. True
  11. 1
  12. needed
  13. no, hardly at all
  14. we keep it the same
  15. a heavy nut or washer
  16. False
  17. a magnet
  18. a pencil and tape
  19. True
  20. it doubles
  21. yeast
  22. how far we pull it back
  23. we measure it
  24. needed
  25. 13
  26. 8
  27. gravity
  28. False
  29. time for 10 swings
  30. True
  31. a mirror
  32. quicker
  33. True
  34. the bob could hit you
  35. 11
  36. a stopwatch
  37. not needed
  38. False
  39. we keep it the same
  40. a battery cell

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