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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 353 · 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 stopwatch (b) a balloon (c) a string (d) a heavy nut or washer
  2. 2.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  3. 3.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  4. 4.True or false: a magnet is needed for the pendulum. (a) True (b) False
  5. 5.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
  6. 6.⚖️ 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 same hook (c) the weight of the bob (d) the string length
  7. 7.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
  8. 8.⚖️ 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
  9. 9.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  10. 10.True or false: a ruler is needed for the pendulum. (a) True (b) False
  11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
  12. 12.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  13. 13.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a balloon (d) a pencil and tape
  14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
  15. 15.True or false: yeast is not needed for the pendulum. (a) False (b) True
  16. 16.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
  17. 17.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  18. 18.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) yeast (d) a mirror
  19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
  20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  21. 21.True or false: a mirror is needed for the pendulum. (a) False (b) True
  22. 22.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
  23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) the string length (d) time for 10 swings
  24. 24.🔮 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 halves (d) it becomes 4 times
  25. 25.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  26. 26.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
  27. 27.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  28. 28.⚖️ 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
  29. 29.⚖️ 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
  30. 30.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
  31. 31.True or false: a string is not needed for the pendulum. (a) True (b) False
  32. 32.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a ruler
  33. 33.🕰️ 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
  34. 34.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
  35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a mirror (d) a heavy nut or washer
  36. 36.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) turmeric powder (c) a heavy nut or washer (d) a pencil and tape
  38. 38.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) a balloon (d) a battery cell
  39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
  40. 40.⚖️ 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

Answer key

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

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