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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 866 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🧺 Which of these is needed for the pendulum? (a) a string (b) turmeric powder (c) a magnet (d) yeast
  2. 2.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
  3. 3.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  4. 4.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a magnet (d) a pencil and tape
  6. 6.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
  7. 7.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
  8. 8.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a grandfather clock (d) a phone
  9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  10. 10.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a battery cell (d) a ruler
  12. 12.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
  13. 13.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
  14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a string (d) turmeric powder
  15. 15.🔮 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 doubles (d) it halves
  16. 16.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
  17. 17.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a mirror (c) a heavy nut or washer (d) a pencil and tape
  18. 18.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a balloon (d) a heavy nut or washer
  19. 19.True or false: yeast is needed for the pendulum. (a) True (b) False
  20. 20.⚖️ 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 weight of the bob (c) the string length
  21. 21.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  22. 22.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) heavier (d) slower
  23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
  24. 24.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
  25. 25.⚖️ 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
  26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
  27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) yeast
  28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
  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) False (b) True
  30. 30.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  31. 31.⚖️ 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
  32. 32.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a heavy nut or washer (d) a string
  33. 33.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  34. 34.⚖️ 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
  35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
  36. 36.⚖️ 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 string length (c) the weight of the bob (d) the same hook
  37. 37.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
  38. 38.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  39. 39.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a battery cell (d) a stopwatch
  40. 40.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a pencil and tape (d) a stopwatch

Answer key

  1. a string
  2. 20
  3. True
  4. not needed
  5. a pencil and tape
  6. no, hardly at all
  7. a longer string
  8. a grandfather clock
  9. needed
  10. False
  11. a battery cell
  12. the bob could hit you
  13. a small nut or washer
  14. turmeric powder
  15. it doubles
  16. 5
  17. a mirror
  18. a balloon
  19. False
  20. the weight of the bob
  21. needed
  22. quicker
  23. 18
  24. 6
  25. we measure it
  26. 12
  27. yeast
  28. 13
  29. True
  30. True
  31. True
  32. a magnet
  33. True
  34. True
  35. 11
  36. the string length
  37. gravity
  38. False
  39. a battery cell
  40. turmeric powder

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