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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 831 · 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 mirror 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 same hook is what we measure. (a) True (b) False
  3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string
  4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
  5. 5.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  6. 6.⚖️ 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) True (b) False
  7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the string length (c) the weight of the bob (d) the same hook
  8. 8.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
  10. 10.⚖️ 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
  11. 11.⚖️ 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 same hook (d) the string length
  12. 12.⚖️ 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
  13. 13.⚖️ 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
  14. 14.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  15. 15.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  16. 16.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
  17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
  18. 18.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  19. 19.⚖️ 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
  20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
  21. 21.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a ruler (c) a pencil and tape (d) a stopwatch
  22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) turmeric powder (d) a heavy nut or washer
  23. 23.True or false: a mirror is needed for the pendulum. (a) True (b) False
  24. 24.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a mirror (c) a string (d) a pencil and tape
  25. 25.True or false: a mirror is not needed for the pendulum. (a) True (b) False
  26. 26.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a mirror (c) a stopwatch (d) a heavy nut or washer
  28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a stopwatch
  29. 29.True or false: a string is not needed for the pendulum. (a) True (b) False
  30. 30.True or false: a string is needed for the pendulum. (a) True (b) False
  31. 31.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  32. 32.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
  33. 33.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a magnet (d) a battery cell
  34. 34.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  35. 35.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more fun (d) it is more accurate
  36. 36.True or false: a magnet is needed for the pendulum. (a) True (b) False
  37. 37.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a string (d) a pencil and tape
  38. 38.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a mirror (d) a string
  39. 39.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?

Answer key

  1. not needed
  2. False
  3. a longer string
  4. quicker
  5. True
  6. True
  7. time for 10 swings
  8. 2
  9. the weight of the bob
  10. True
  11. the string length
  12. we keep it the same
  13. True
  14. False
  15. needed
  16. 9
  17. the bob could hit you
  18. 3
  19. the same hook
  20. 19
  21. turmeric powder
  22. turmeric powder
  23. False
  24. a mirror
  25. True
  26. not needed
  27. a mirror
  28. a magnet
  29. False
  30. True
  31. True
  32. a small nut or washer
  33. a heavy nut or washer
  34. True
  35. it is more accurate
  36. False
  37. a magnet
  38. a string
  39. 1
  40. 10

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