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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 938 · 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.🕰️ 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
  2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the same hook (c) the string length (d) the weight of the bob
  3. 3.⚖️ 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
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
  6. 6.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) turmeric powder (d) a string
  7. 7.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  8. 8.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a pencil and tape (d) a string
  9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
  10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a pencil and tape (c) a string (d) a heavy nut or washer
  11. 11.⚖️ 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
  12. 12.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  13. 13.⚖️ 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
  14. 14.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a ruler (d) a battery cell
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a string (d) a mirror
  16. 16.True or false: a battery cell is needed for the pendulum. (a) True (b) False
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) how far we pull it back (d) time for 10 swings
  18. 18.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
  19. 19.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a sundial (d) a grandfather clock
  20. 20.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
  21. 21.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a battery cell (d) yeast
  22. 22.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a magnet (d) a pencil and tape
  23. 23.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  24. 24.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  25. 25.⚖️ 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
  26. 26.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  27. 27.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  28. 28.⚖️ 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) True (b) False
  29. 29.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a pencil and tape (d) a battery cell
  30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  31. 31.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
  33. 33.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  34. 34.True or false: a magnet is needed for the pendulum. (a) True (b) False
  35. 35.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  36. 36.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) yeast (d) a ruler
  37. 37.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  38. 38.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  39. 39.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  40. 40.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same

Answer key

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

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