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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 975 · 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.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) turmeric powder (d) a ruler
  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 change it (b) we measure it (c) we keep it the same
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
  4. 4.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  5. 5.⚖️ 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
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a string (d) a balloon
  7. 7.⚖️ 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 measure it (c) we change it
  8. 8.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a ruler (d) a stopwatch
  10. 10.⚖️ 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
  11. 11.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  12. 12.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster
  13. 13.🛟 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
  14. 14.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  15. 15.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a grandfather clock (d) a digital watch
  16. 16.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
  18. 18.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  19. 19.True or false: a string is not needed for the pendulum. (a) True (b) False
  20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  21. 21.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  22. 22.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  23. 23.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  24. 24.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a battery cell
  26. 26.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the weight of the bob (c) the string length (d) time for 10 swings
  28. 28.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a stopwatch (d) a ruler
  29. 29.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
  30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a magnet (d) a heavy nut or washer
  31. 31.True or false: yeast is needed for the pendulum. (a) False (b) True
  32. 32.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
  33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
  34. 34.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
  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.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  37. 37.True or false: a magnet is needed for the pendulum. (a) False (b) True
  38. 38.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
  39. 39.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  40. 40.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed

Answer key

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

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