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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 257 · 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.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  2. 2.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  3. 3.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
  4. 4.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  5. 5.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a string (d) a balloon
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a battery cell (d) a string
  7. 7.True or false: a string is not needed for the pendulum. (a) False (b) True
  8. 8.🛟 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
  9. 9.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) yeast (d) a battery cell
  10. 10.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a ruler (d) turmeric powder
  11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a string (d) a heavy nut or washer
  12. 12.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
  15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
  16. 16.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a heavier bob (d) a longer string
  17. 17.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) time for 10 swings (c) the string length (d) the weight of the bob
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a ruler (c) a pencil and tape (d) a heavy nut or washer
  20. 20.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a digital watch (d) a sundial
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the same hook
  22. 22.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  23. 23.🛟 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
  24. 24.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  25. 25.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
  26. 26.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a ruler (d) a magnet
  28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a heavy nut or washer (d) a ruler
  29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
  30. 30.True or false: a magnet is needed for the pendulum. (a) False (b) True
  31. 31.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  32. 32.True or false: a mirror is not needed for the pendulum. (a) True (b) False
  33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
  34. 34.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a balloon (d) yeast
  35. 35.True or false: a ruler is needed for the pendulum. (a) True (b) False
  36. 36.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  37. 37.🔮 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
  38. 38.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  39. 39.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
  40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same

Answer key

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

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