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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 164 · 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 pencil and tape is not needed for the pendulum. (a) True (b) False
  2. 2.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
  4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
  5. 5.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
  6. 6.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  7. 7.⚖️ 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
  8. 8.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  9. 9.⚖️ 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
  10. 10.⚖️ 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 measure it (c) we keep it the same
  11. 11.⚖️ 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 string length (c) how far we pull it back (d) time for 10 swings
  12. 12.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  13. 13.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  14. 14.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a pencil and tape (c) yeast (d) a balloon
  15. 15.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
  17. 17.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
  19. 19.⚖️ 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
  20. 20.True or false: yeast is not needed for the pendulum. (a) True (b) False
  21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
  22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the string length (d) time for 10 swings
  23. 23.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging
  24. 24.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  25. 25.🧺 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
  26. 26.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
  28. 28.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  29. 29.🛟 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
  30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
  31. 31.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a string (d) a balloon
  32. 32.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
  33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
  34. 34.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
  35. 35.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it becomes 4 times (d) it doubles
  36. 36.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  37. 37.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 39 seconds?
  38. 38.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a magnet (c) a pencil and tape (d) a string
  39. 39.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
  40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a ruler (d) a heavy nut or washer

Answer key

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

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