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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 472 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a string (d) a stopwatch
  2. 2.True or false: a mirror is needed for the pendulum. (a) False (b) True
  3. 3.⚖️ 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
  4. 4.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  5. 5.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a balloon (d) a stopwatch
  6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
  7. 7.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
  8. 8.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
  10. 10.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
  11. 11.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) it is more accurate (d) one swing is too slow
  12. 12.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  13. 13.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
  14. 14.⚖️ 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 measure it (b) we keep it the same (c) we change it
  15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
  16. 16.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  17. 17.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  18. 18.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  19. 19.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a stopwatch (c) a string (d) a heavy nut or washer
  20. 20.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
  22. 22.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) a string (d) a magnet
  23. 23.⚖️ 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
  24. 24.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a stopwatch (d) a balloon
  26. 26.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) the string (d) magnetism
  27. 27.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  28. 28.True or false: a balloon is not needed for the pendulum. (a) True (b) False
  29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
  30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a ruler (d) a magnet
  31. 31.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  32. 32.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  33. 33.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  34. 34.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a phone (d) a grandfather clock
  35. 35.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
  36. 36.⚖️ 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) True (b) False
  37. 37.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a battery cell (d) a magnet
  38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
  39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) the same hook (d) the string length
  40. 40.True or false: yeast is needed for the pendulum. (a) False (b) True

Answer key

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

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