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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 552 · 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) stopped (c) heavier (d) quicker
  2. 2.⚖️ 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 keep it the same (c) we change it
  3. 3.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  4. 4.⚖️ 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
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a pencil and tape
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a heavy nut or washer (d) a ruler
  7. 7.⚖️ 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
  8. 8.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  9. 9.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a ruler (d) a stopwatch
  10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
  11. 11.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a mirror (d) a battery cell
  12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) yeast (d) a pencil and tape
  13. 13.⚖️ 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
  14. 14.True or false: a string is not needed for the pendulum. (a) True (b) False
  15. 15.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  16. 16.⚖️ 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 change it (c) we keep it the same
  17. 17.⚖️ 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
  18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) much faster (d) it cannot swing
  19. 19.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  20. 20.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a phone (d) a grandfather clock
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) time for 10 swings (c) the same hook (d) the weight of the bob
  22. 22.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
  24. 24.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
  25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
  26. 26.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  27. 27.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a string (d) a magnet
  28. 28.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a stopwatch (d) turmeric powder
  29. 29.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  30. 30.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  31. 31.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
  32. 32.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) turmeric powder (d) a heavy nut or washer
  33. 33.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  34. 34.True or false: a string is needed for the pendulum. (a) False (b) True
  35. 35.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  36. 36.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  37. 37.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  38. 38.⚖️ 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
  39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
  40. 40.True or false: a balloon is not needed for the pendulum. (a) True (b) False

Answer key

  1. quicker
  2. we keep it the same
  3. False
  4. we change it
  5. a balloon
  6. a mirror
  7. True
  8. not needed
  9. a balloon
  10. the bob could hit you
  11. a pencil and tape
  12. yeast
  13. False
  14. False
  15. not needed
  16. we measure it
  17. True
  18. about the same
  19. False
  20. a grandfather clock
  21. the string length
  22. 1
  23. a longer string
  24. gravity
  25. the same hook
  26. 1
  27. a string
  28. a stopwatch
  29. True
  30. needed
  31. needed
  32. turmeric powder
  33. not needed
  34. True
  35. 1
  36. 2
  37. not needed
  38. True
  39. True
  40. True

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