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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 269 · 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.⚖️ 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
  2. 2.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) the string length (d) the same hook
  4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
  5. 5.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
  6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
  7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a pencil and tape (d) a heavy nut or washer
  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 same hook is kept the same. (a) False (b) True
  10. 10.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
  11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
  12. 12.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a mirror
  13. 13.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  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 change it (b) we keep it the same (c) we measure it
  15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
  16. 16.⚖️ 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
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
  18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
  19. 19.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
  20. 20.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  21. 21.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a stopwatch (d) a pencil and tape
  23. 23.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  24. 24.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  25. 25.True or false: a string is needed for the pendulum. (a) False (b) True
  26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a magnet (d) a string
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
  28. 28.🧺 Which of these is needed for the pendulum? (a) yeast (b) a string (c) a mirror (d) a balloon
  29. 29.True or false: a balloon is needed for the pendulum. (a) True (b) False
  30. 30.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) yeast
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a heavy nut or washer (d) a stopwatch
  32. 32.⚖️ 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 weight of the bob
  33. 33.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a mirror (d) a heavy nut or washer
  34. 34.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
  35. 35.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
  36. 36.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  37. 37.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the wind (d) the string
  38. 38.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  39. 39.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  40. 40.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed

Answer key

  1. True
  2. True
  3. the string length
  4. about the same
  5. a longer string
  6. 19
  7. a battery cell
  8. not needed
  9. True
  10. 18
  11. the bob could hit you
  12. a mirror
  13. not needed
  14. we keep it the same
  15. 10
  16. the same hook
  17. we measure it
  18. False
  19. 16
  20. False
  21. not needed
  22. yeast
  23. needed
  24. not needed
  25. True
  26. a magnet
  27. False
  28. a string
  29. False
  30. yeast
  31. a balloon
  32. the weight of the bob
  33. a heavy nut or washer
  34. quicker
  35. it doubles
  36. 3
  37. gravity
  38. needed
  39. 1
  40. not needed

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