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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 48 · 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) stopped (d) heavier
  2. 2.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  3. 3.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  4. 4.⚖️ 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
  5. 5.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
  6. 6.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  7. 7.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a balloon (d) a battery cell
  8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a heavy nut or washer (d) a string
  9. 9.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  10. 10.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  11. 11.⚖️ 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
  12. 12.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a digital watch (d) a phone
  13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a battery cell (d) a stopwatch
  14. 14.⚖️ 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) how far we pull it back
  15. 15.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  16. 16.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a stopwatch (d) turmeric powder
  17. 17.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  18. 18.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a heavy nut or washer (d) yeast
  19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
  20. 20.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) a balloon
  21. 21.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  22. 22.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a ruler (c) a magnet (d) turmeric powder
  23. 23.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  24. 24.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a string
  26. 26.⚖️ 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
  27. 27.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  28. 28.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  29. 29.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  30. 30.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
  31. 31.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
  32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
  33. 33.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
  34. 34.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
  35. 35.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a ruler (d) a pencil and tape
  36. 36.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  37. 37.⚖️ 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) True (b) False
  38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
  39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
  40. 40.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True

Answer key

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

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