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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 898 · 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.

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  1. 1.⚖️ 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
  2. 2.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
  3. 3.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) the weight of the bob (d) the string length
  5. 5.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a stopwatch (d) a heavy nut or washer
  7. 7.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
  8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
  9. 9.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a pencil and tape (d) a string
  10. 10.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a heavy nut or washer (d) a ruler
  12. 12.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
  13. 13.⚖️ 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 measure it (c) we change it
  14. 14.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  15. 15.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  16. 16.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  17. 17.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
  18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
  19. 19.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
  21. 21.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
  22. 22.🕰️ 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
  23. 23.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) 10 is a lucky number (d) one swing is too slow
  24. 24.⚖️ 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 same hook
  25. 25.True or false: a balloon is needed for the pendulum. (a) False (b) True
  26. 26.True or false: a string is needed for the pendulum. (a) True (b) False
  27. 27.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
  28. 28.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a mirror (d) a string
  29. 29.True or false: a ruler is not needed for the pendulum. (a) True (b) False
  30. 30.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  31. 31.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  33. 33.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  34. 34.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
  35. 35.⚖️ 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
  36. 36.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  37. 37.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  38. 38.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
  39. 39.⚖️ 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
  40. 40.🧺 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) yeast

Answer key

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

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