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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 360 · 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.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) yeast (d) a balloon
  2. 2.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) 10 is a lucky number (d) it is more accurate
  3. 3.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
  4. 4.⚖️ 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 weight of the bob (c) the string length
  5. 5.⚖️ 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
  6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) much faster (d) about the same
  7. 7.⚖️ 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) True (b) False
  8. 8.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  9. 9.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a ruler (c) a pencil and tape (d) a stopwatch
  10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
  11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
  12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a battery cell (d) a ruler
  13. 13.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a balloon (d) a stopwatch
  14. 14.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
  15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
  16. 16.⚖️ 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
  17. 17.True or false: a magnet is needed for the pendulum. (a) False (b) True
  18. 18.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  19. 19.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a mirror (d) turmeric powder
  20. 20.True or false: a ruler is not needed for the pendulum. (a) True (b) False
  21. 21.⚖️ 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 same hook (d) the weight of the bob
  22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  23. 23.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  24. 24.True or false: a ruler is needed for the pendulum. (a) True (b) False
  25. 25.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  26. 26.True or false: a mirror is needed for the pendulum. (a) True (b) False
  27. 27.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  28. 28.⚖️ 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 string length (d) the weight of the bob
  29. 29.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a stopwatch (d) a pencil and tape
  31. 31.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a string (d) a ruler
  32. 32.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
  33. 33.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a mirror (d) a heavy nut or washer
  34. 34.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  35. 35.⚖️ 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
  36. 36.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
  37. 37.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  38. 38.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a stopwatch (d) a ruler
  40. 40.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed

Answer key

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

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