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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 807 · 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.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a ruler (d) a string
  3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
  4. 4.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a digital watch (d) a sundial
  5. 5.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a pencil and tape (d) a heavy nut or washer
  6. 6.⚖️ 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
  7. 7.True or false: a string is not needed for the pendulum. (a) True (b) False
  8. 8.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  9. 9.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
  11. 11.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a balloon (d) a string
  13. 13.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
  14. 14.⚖️ 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
  15. 15.⚖️ 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
  16. 16.True or false: a mirror is not needed for the pendulum. (a) True (b) False
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
  18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
  19. 19.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
  20. 20.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a magnet (d) a balloon
  21. 21.⚖️ 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
  22. 22.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  23. 23.⚖️ 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
  24. 24.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  25. 25.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
  27. 27.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
  29. 29.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
  30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
  32. 32.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
  33. 33.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a magnet (c) a ruler (d) a heavy nut or washer
  34. 34.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) a mirror
  35. 35.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  36. 36.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) yeast (d) a heavy nut or washer
  38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
  39. 39.True or false: yeast is not needed for the pendulum. (a) True (b) False
  40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a string (c) a stopwatch (d) a ruler

Answer key

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

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