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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 824 · 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.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  2. 2.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  3. 3.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  4. 4.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) time for 10 swings (c) the string length
  6. 6.True or false: a string is not needed for the pendulum. (a) True (b) False
  7. 7.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  8. 8.⚖️ 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
  9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a battery cell (d) a string
  10. 10.⚖️ 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
  11. 11.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  12. 12.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a heavy nut or washer (d) a mirror
  13. 13.🔮 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
  14. 14.🛟 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
  15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a mirror (d) a ruler
  16. 16.⚖️ 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) time for 10 swings (c) the string length
  17. 17.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  18. 18.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a battery cell (d) a balloon
  19. 19.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
  20. 20.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
  22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
  23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
  24. 24.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) yes, much slower (d) no, hardly at all
  25. 25.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  26. 26.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  27. 27.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
  28. 28.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
  30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a magnet (d) a ruler
  31. 31.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  32. 32.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  33. 33.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) a balloon
  34. 34.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  35. 35.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
  37. 37.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a mirror (d) a string
  38. 38.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  39. 39.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a mirror (d) yeast
  40. 40.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) it is more fun (d) one swing is too slow

Answer key

  1. not needed
  2. not needed
  3. not needed
  4. 1
  5. how far we pull it back
  6. False
  7. True
  8. True
  9. a battery cell
  10. we keep it the same
  11. 8
  12. a heavy nut or washer
  13. it doubles
  14. a small nut or washer
  15. a mirror
  16. the weight of the bob
  17. False
  18. a stopwatch
  19. a longer string
  20. needed
  21. we measure it
  22. about the same
  23. 18
  24. no, hardly at all
  25. 2
  26. needed
  27. the bob could hit you
  28. 3
  29. True
  30. a magnet
  31. 2
  32. not needed
  33. a balloon
  34. True
  35. needed
  36. 10
  37. a string
  38. needed
  39. a pencil and tape
  40. it is more accurate

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