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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 650 · 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.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  2. 2.⚖️ 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) True (b) False
  3. 3.True or false: a string is needed for the pendulum. (a) False (b) True
  4. 4.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
  6. 6.True or false: a magnet is needed for the pendulum. (a) False (b) True
  7. 7.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  8. 8.True or false: a ruler is needed for the pendulum. (a) True (b) False
  9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
  10. 10.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a string (d) yeast
  12. 12.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) yeast (d) turmeric powder
  13. 13.🧺 Do we need a ruler for the pendulum? (a) needed (b) not 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 measure it (b) we change it (c) we keep it the same
  15. 15.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  16. 16.True or false: yeast is not needed for the pendulum. (a) False (b) True
  17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
  18. 18.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a ruler (d) a string
  19. 19.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  20. 20.⚖️ 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
  21. 21.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  22. 22.⚖️ 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 change it (c) we measure it
  23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) how far we pull it back (c) the weight of the bob (d) the string length
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
  25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  27. 27.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
  28. 28.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) how far we pull it back (d) time for 10 swings
  30. 30.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a mirror (d) a balloon
  31. 31.True or false: a ruler is not needed for the pendulum. (a) True (b) False
  32. 32.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
  33. 33.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the wind (d) the string
  34. 34.⚖️ 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
  35. 35.⚖️ 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
  36. 36.⚖️ 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
  37. 37.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a stopwatch (d) a magnet
  38. 38.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
  39. 39.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  40. 40.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?

Answer key

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

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