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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 636 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) yeast
  2. 2.⚖️ 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) False (b) True
  3. 3.🛟 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
  4. 4.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  5. 5.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
  6. 6.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (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 not needed for the pendulum. (a) True (b) False
  9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the string length (c) the same hook (d) time for 10 swings
  10. 10.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  11. 11.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  12. 12.🔮 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
  13. 13.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a heavy nut or washer (d) a magnet
  14. 14.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
  16. 16.⚖️ 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
  17. 17.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
  18. 18.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  19. 19.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
  20. 20.True or false: a magnet is needed for the pendulum. (a) True (b) False
  21. 21.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
  23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
  24. 24.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  25. 25.True or false: a ruler is needed for the pendulum. (a) False (b) True
  26. 26.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  27. 27.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a ruler (d) a pencil and tape
  29. 29.⚖️ 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 same hook (c) how far we pull it back (d) the string length
  30. 30.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
  31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
  32. 32.⚖️ 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 change it (c) we keep it the same
  33. 33.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a magnet (d) yeast
  34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  35. 35.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  36. 36.True or false: a battery cell is needed for the pendulum. (a) True (b) False
  37. 37.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
  39. 39.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a mirror (d) a ruler
  40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a magnet

Answer key

  1. yeast
  2. True
  3. a small nut or washer
  4. not needed
  5. a longer string
  6. needed
  7. we keep it the same
  8. False
  9. the string length
  10. 8
  11. False
  12. it doubles
  13. a heavy nut or washer
  14. 2
  15. turmeric powder
  16. False
  17. quicker
  18. not needed
  19. 7
  20. False
  21. not needed
  22. about the same
  23. how far we pull it back
  24. not needed
  25. True
  26. True
  27. 3
  28. a balloon
  29. time for 10 swings
  30. 19
  31. 5
  32. we keep it the same
  33. a pencil and tape
  34. needed
  35. True
  36. False
  37. not needed
  38. False
  39. a ruler
  40. a magnet

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