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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 673 · 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 mirror for the pendulum? (a) needed (b) not needed
  2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a magnet (d) a pencil and tape
  3. 3.⚖️ 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
  4. 4.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  5. 5.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
  6. 6.🔮 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
  7. 7.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  8. 8.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  9. 9.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
  10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
  11. 11.⚖️ 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
  12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a stopwatch
  13. 13.True or false: a string is needed for the pendulum. (a) False (b) True
  14. 14.⚖️ 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
  15. 15.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
  16. 16.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  17. 17.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
  18. 18.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
  19. 19.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) turmeric powder (d) a pencil and tape
  21. 21.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
  23. 23.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
  25. 25.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a mirror (d) yeast
  26. 26.⚖️ 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
  27. 27.True or false: a magnet is needed for the pendulum. (a) False (b) True
  28. 28.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  29. 29.⚖️ 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) time for 10 swings (c) the string length (d) the same hook
  30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a heavy nut or washer (d) a ruler
  32. 32.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  33. 33.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a heavy nut or washer (d) a balloon
  34. 34.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  35. 35.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  36. 36.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
  37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
  38. 38.⚖️ 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
  39. 39.True or false: a balloon is needed for the pendulum. (a) True (b) False
  40. 40.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True

Answer key

  1. not needed
  2. a magnet
  3. the same hook
  4. needed
  5. a small nut or washer
  6. it doubles
  7. not needed
  8. not needed
  9. 17
  10. about the same
  11. True
  12. a battery cell
  13. True
  14. False
  15. the bob could hit you
  16. False
  17. a longer string
  18. 4
  19. needed
  20. turmeric powder
  21. 2
  22. how far we pull it back
  23. 2
  24. False
  25. a pencil and tape
  26. True
  27. False
  28. needed
  29. the string length
  30. quicker
  31. a mirror
  32. needed
  33. a heavy nut or washer
  34. True
  35. False
  36. 5
  37. we keep it the same
  38. we keep it the same
  39. False
  40. True

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