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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 738 · 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.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) yeast (d) a pencil and tape
  2. 2.⚖️ 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
  3. 3.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  4. 4.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
  5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
  6. 6.🧺 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
  7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
  8. 8.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  9. 9.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
  10. 10.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) yeast (d) a mirror
  11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the weight of the bob (c) time for 10 swings
  13. 13.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  14. 14.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
  15. 15.🧺 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) a magnet
  16. 16.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  17. 17.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  18. 18.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a battery cell (d) a ruler
  20. 20.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  21. 21.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) yeast (d) a stopwatch
  22. 22.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a heavier bob (d) a longer string
  24. 24.⚖️ 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
  25. 25.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  26. 26.⚖️ 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 measure it (c) we change it
  27. 27.⚖️ 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) False (b) True
  28. 28.⚖️ 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 change it (c) we measure it
  29. 29.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) turmeric powder (d) a heavy nut or washer
  30. 30.True or false: yeast is needed for the pendulum. (a) True (b) False
  31. 31.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we keep it the same (b) we change it (c) we measure it
  33. 33.🔮 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
  34. 34.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
  35. 35.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  36. 36.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
  38. 38.⚖️ 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) True (b) False
  39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) a mirror
  40. 40.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a magnet (d) a pencil and tape

Answer key

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

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