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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 22 · 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.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
  3. 3.⚖️ 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 measure it (c) we keep it the same
  4. 4.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  5. 5.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) turmeric powder (d) yeast
  6. 6.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a pencil and tape (d) turmeric powder
  7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a pencil and tape (d) a battery cell
  8. 8.⚖️ 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
  9. 9.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
  10. 10.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
  11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a stopwatch (d) a balloon
  12. 12.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a phone (d) a sundial
  13. 13.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  14. 14.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
  16. 16.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
  17. 17.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a mirror (d) a string
  20. 20.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
  21. 21.⚖️ 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
  22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a heavy nut or washer (d) a stopwatch
  23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
  24. 24.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a string (d) a mirror
  25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
  26. 26.True or false: a pencil and tape is not 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 27 seconds?
  28. 28.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
  30. 30.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  31. 31.⚖️ 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
  32. 32.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) yes, much slower (d) no, hardly at all
  33. 33.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
  35. 35.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  36. 36.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  37. 37.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
  38. 38.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  39. 39.⚖️ 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
  40. 40.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?

Answer key

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

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