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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 572 · 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 kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
  2. 2.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a sundial (d) a digital watch
  3. 3.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  4. 4.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) yeast
  6. 6.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a ruler (d) a battery cell
  8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
  9. 9.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
  10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a heavier bob (d) a longer string
  11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) how far we pull it back (d) the string length
  12. 12.⚖️ 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 keep it the same (c) we measure it
  13. 13.True or false: a balloon is needed for the pendulum. (a) True (b) False
  14. 14.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  15. 15.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  16. 16.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  17. 17.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a glass bottle (d) a heavy brick
  18. 18.⚖️ 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) True (b) False
  19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
  20. 20.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a battery cell (d) a heavy nut or washer
  21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a stopwatch (d) turmeric powder
  22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a ruler (d) a pencil and tape
  23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
  25. 25.True or false: a mirror is needed for the pendulum. (a) False (b) True
  26. 26.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  27. 27.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the same hook (c) the weight of the bob (d) the string length
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
  30. 30.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
  32. 32.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
  34. 34.True or false: a string is needed for the pendulum. (a) False (b) True
  35. 35.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  36. 36.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  37. 37.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
  38. 38.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  39. 39.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) a mirror (d) a balloon
  40. 40.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False

Answer key

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

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