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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 279 · 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.⚖️ 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) the weight of the bob (d) time for 10 swings
  2. 2.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) turmeric powder (d) a heavy nut or washer
  4. 4.⚖️ 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 same hook (c) how far we pull it back (d) the string length
  5. 5.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a mirror (d) a pencil and tape
  6. 6.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
  8. 8.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  9. 9.🛟 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
  10. 10.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more fun (d) it is more accurate
  11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
  12. 12.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
  13. 13.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
  14. 14.⚖️ 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
  15. 15.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  16. 16.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a stopwatch (c) a pencil and tape (d) a ruler
  17. 17.🔮 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
  18. 18.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  19. 19.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
  20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
  21. 21.⚖️ 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
  22. 22.⚖️ 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) True (b) False
  23. 23.⚖️ 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
  24. 24.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  25. 25.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  26. 26.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  27. 27.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  28. 28.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a balloon (d) yeast
  29. 29.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  30. 30.⚖️ 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
  31. 31.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  32. 32.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  33. 33.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  34. 34.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  35. 35.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a magnet (d) a ruler
  36. 36.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a ruler (d) turmeric powder
  37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
  38. 38.⚖️ 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 change it (c) we keep it the same
  39. 39.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  40. 40.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a string (d) a balloon

Answer key

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

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