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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 759 · 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.⚖️ 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) the string length (c) time for 10 swings
  2. 2.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
  3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) turmeric powder
  4. 4.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
  5. 5.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a pencil and tape (d) turmeric powder
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a balloon
  7. 7.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
  8. 8.🧺 Which of these is not needed for the pendulum? (a) a string (b) a mirror (c) a pencil and tape (d) a stopwatch
  9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
  11. 11.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the string length (c) time for 10 swings (d) how far we pull it back
  13. 13.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
  15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
  16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
  17. 17.⚖️ 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) True (b) False
  18. 18.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  19. 19.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  20. 20.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
  22. 22.🧺 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 battery cell
  23. 23.🕰️ 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
  24. 24.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
  25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a magnet (c) a ruler (d) a string
  26. 26.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  27. 27.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  28. 28.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  29. 29.True or false: a ruler is needed for the pendulum. (a) True (b) False
  30. 30.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  31. 31.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a battery cell (d) a ruler
  32. 32.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  33. 33.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a mirror (d) a string
  34. 34.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  35. 35.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a stopwatch (d) a pencil and tape
  37. 37.True or false: a mirror is needed for the pendulum. (a) True (b) False
  38. 38.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
  39. 39.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  40. 40.⚖️ 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

Answer key

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

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