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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 727 · 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? True or false: the string length is what we measure. (a) True (b) False
  2. 2.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  3. 3.🛟 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
  4. 4.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  5. 5.True or false: a balloon is needed for the pendulum. (a) False (b) True
  6. 6.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
  7. 7.⚖️ 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
  8. 8.⚖️ 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 weight of the bob (c) the string length (d) the same hook
  9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a ruler (d) a stopwatch
  10. 10.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  11. 11.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  12. 12.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a stopwatch (d) a ruler
  13. 13.🧺 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) turmeric powder (d) a ruler
  14. 14.⚖️ 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 change it (c) we measure it
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a string (d) a ruler
  16. 16.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
  17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a heavy nut or washer (c) a ruler (d) a stopwatch
  18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
  19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
  20. 20.True or false: a ruler is needed for the pendulum. (a) False (b) True
  21. 21.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
  22. 22.True or false: a string is not needed for the pendulum. (a) False (b) True
  23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
  24. 24.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
  25. 25.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a battery cell (c) a balloon (d) a magnet
  26. 26.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not 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) the weight of the bob (b) the string length (c) how far we pull it back (d) time for 10 swings
  29. 29.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  30. 30.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
  32. 32.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) turmeric powder (d) a heavy nut or washer
  33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
  34. 34.True or false: a magnet is not needed for the pendulum. (a) True (b) False
  35. 35.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  36. 36.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  37. 37.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it stays the same (d) it doubles
  38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
  39. 39.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
  40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?

Answer key

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

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