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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 425 · 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.⚖️ 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) the string length (c) the weight of the bob (d) time for 10 swings
  2. 2.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
  3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
  4. 4.True or false: a ruler is not needed for the pendulum. (a) True (b) False
  5. 5.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
  7. 7.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  8. 8.True or false: yeast is needed for the pendulum. (a) True (b) False
  9. 9.True or false: a balloon is needed for the pendulum. (a) True (b) False
  10. 10.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a heavy nut or washer (d) a string
  12. 12.True or false: yeast is not needed for the pendulum. (a) True (b) False
  13. 13.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
  15. 15.🔮 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
  16. 16.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much faster (d) yes, much slower
  17. 17.⚖️ 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
  18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a mirror (d) a pencil and tape
  19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
  20. 20.True or false: a mirror is needed for the pendulum. (a) True (b) False
  21. 21.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a heavy nut or washer (d) a mirror
  22. 22.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  23. 23.⚖️ 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
  24. 24.True or false: a balloon is not needed for the pendulum. (a) True (b) False
  25. 25.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  26. 26.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
  27. 27.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
  30. 30.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a magnet (d) a balloon
  31. 31.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
  32. 32.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  33. 33.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  34. 34.⚖️ 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) False (b) True
  35. 35.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a ruler (d) a heavy nut or washer
  36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
  37. 37.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  38. 38.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
  39. 39.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  40. 40.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind

Answer key

  1. the string length
  2. time for 10 swings
  3. a longer string
  4. False
  5. 2
  6. we change it
  7. True
  8. False
  9. False
  10. not needed
  11. a balloon
  12. True
  13. needed
  14. how far we pull it back
  15. it doubles
  16. no, hardly at all
  17. we measure it
  18. a mirror
  19. False
  20. False
  21. a mirror
  22. needed
  23. the weight of the bob
  24. True
  25. 1
  26. 2
  27. not needed
  28. we keep it the same
  29. False
  30. a string
  31. a grandfather clock
  32. needed
  33. 1
  34. True
  35. a battery cell
  36. 18
  37. not needed
  38. the bob could hit you
  39. needed
  40. gravity

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