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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 786 · 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.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  2. 2.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a pencil and tape (d) yeast
  3. 3.True or false: yeast is not needed for the pendulum. (a) True (b) False
  4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a stopwatch (d) a heavy nut or washer
  5. 5.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  6. 6.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  7. 7.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a balloon (d) a pencil and tape
  8. 8.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  10. 10.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a pencil and tape (d) a string
  11. 11.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a battery cell (d) a mirror
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) time for 10 swings (c) the string length (d) how far we pull it back
  13. 13.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  14. 14.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a shorter string (d) a heavier bob
  15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) a balloon
  16. 16.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a sundial (d) a digital watch
  17. 17.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a stopwatch (d) a pencil and tape
  19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) quicker (d) heavier
  20. 20.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) a battery cell (d) a balloon
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True
  22. 22.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
  23. 23.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  24. 24.True or false: yeast is needed for the pendulum. (a) True (b) False
  25. 25.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  26. 26.True or false: a balloon is needed for the pendulum. (a) False (b) True
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
  29. 29.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  30. 30.🕰️ 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
  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 keep it the same (b) we change it (c) we measure it
  32. 32.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a stopwatch (d) a balloon
  33. 33.⚖️ 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) time for 10 swings (c) the string length
  34. 34.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a heavy nut or washer (c) a stopwatch (d) a pencil and tape
  36. 36.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
  37. 37.⚖️ 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 keep it the same (c) we change it
  38. 38.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  39. 39.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a heavy nut or washer (d) turmeric powder
  40. 40.True or false: a mirror is needed for the pendulum. (a) False (b) True

Answer key

  1. True
  2. yeast
  3. True
  4. a magnet
  5. 8
  6. not needed
  7. a balloon
  8. 1
  9. needed
  10. turmeric powder
  11. a ruler
  12. the string length
  13. not needed
  14. a longer string
  15. a balloon
  16. a grandfather clock
  17. 1
  18. yeast
  19. quicker
  20. a pencil and tape
  21. True
  22. the bob could hit you
  23. 3
  24. False
  25. not needed
  26. False
  27. we keep it the same
  28. the same hook
  29. needed
  30. no, hardly at all
  31. we keep it the same
  32. a stopwatch
  33. how far we pull it back
  34. True
  35. turmeric powder
  36. needed
  37. we change it
  38. False
  39. a heavy nut or washer
  40. False

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