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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 471 · 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 mirror is needed for the pendulum. (a) True (b) False
  2. 2.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a mirror (d) a magnet
  3. 3.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
  4. 4.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) yeast (d) turmeric powder
  5. 5.⚖️ 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) how far we pull it back (c) the string length (d) the weight of the bob
  6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
  7. 7.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  8. 8.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster
  9. 9.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
  10. 10.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a stopwatch (d) a heavy nut or washer
  11. 11.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  12. 12.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  13. 13.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  14. 14.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
  15. 15.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
  16. 16.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a ruler (d) a string
  17. 17.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a string (d) a heavy nut or washer
  19. 19.🛟 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
  20. 20.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  21. 21.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a mirror (d) a ruler
  22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a ruler (d) a heavy nut or washer
  23. 23.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a heavier bob (d) a longer string
  25. 25.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a heavy nut or washer (d) a mirror
  26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) a mirror
  27. 27.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  28. 28.⚖️ 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) False (b) True
  29. 29.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
  31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  32. 32.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  33. 33.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
  35. 35.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  36. 36.True or false: yeast is not needed for the pendulum. (a) True (b) False
  37. 37.True or false: a string is not needed for the pendulum. (a) True (b) False
  38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
  39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  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 fun (c) it is more accurate (d) one swing is too slow

Answer key

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

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