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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 834 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
  2. 2.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  3. 3.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
  4. 4.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a battery cell (c) yeast (d) a magnet
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a magnet (c) a heavy nut or washer (d) a stopwatch
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a mirror (d) a string
  7. 7.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
  8. 8.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  9. 9.⚖️ 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
  10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
  11. 11.True or false: a magnet is not needed for the pendulum. (a) True (b) False
  12. 12.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
  13. 13.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a balloon (d) a pencil and tape
  14. 14.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  15. 15.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
  16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the same hook
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
  18. 18.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  19. 19.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
  22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) yeast (d) a string
  23. 23.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) the string length (d) time for 10 swings
  25. 25.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  26. 26.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  28. 28.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  29. 29.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a magnet (d) a heavy nut or washer
  30. 30.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
  32. 32.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  33. 33.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a pencil and tape (d) a mirror
  34. 34.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a stopwatch (d) a balloon
  35. 35.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a battery cell (d) yeast
  36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
  37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
  38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a balloon (d) a ruler
  39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
  40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?

Answer key

  1. quicker
  2. not needed
  3. it doubles
  4. a ruler
  5. a magnet
  6. a mirror
  7. 20
  8. not needed
  9. True
  10. we change it
  11. True
  12. 16
  13. a balloon
  14. not needed
  15. no, hardly at all
  16. the same hook
  17. True
  18. needed
  19. False
  20. we keep it the same
  21. the weight of the bob
  22. a string
  23. False
  24. time for 10 swings
  25. True
  26. 2
  27. needed
  28. not needed
  29. a magnet
  30. needed
  31. we keep it the same
  32. True
  33. a pencil and tape
  34. a stopwatch
  35. a heavy nut or washer
  36. we keep it the same
  37. False
  38. a balloon
  39. 19
  40. 18

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