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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 632 · 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.🕰️ 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
  2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the same hook (d) how far we pull it back
  3. 3.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a heavy nut or washer (d) a mirror
  4. 4.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  5. 5.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  6. 6.True or false: a magnet is needed for the pendulum. (a) True (b) False
  7. 7.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  8. 8.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
  9. 9.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
  10. 10.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  11. 11.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
  13. 13.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
  15. 15.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a battery cell (d) a magnet
  16. 16.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) the string (d) gravity
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
  18. 18.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  19. 19.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  20. 20.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  21. 21.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a mirror (d) a pencil and tape
  22. 22.True or false: a balloon is needed for the pendulum. (a) False (b) True
  23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) turmeric powder
  24. 24.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a mirror (d) a heavy nut or washer
  25. 25.True or false: yeast is needed for the pendulum. (a) False (b) True
  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 stopwatch (d) a balloon
  27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
  28. 28.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
  29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a string (d) yeast
  30. 30.🔮 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
  31. 31.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) a mirror
  33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
  34. 34.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  35. 35.⚖️ 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
  36. 36.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  37. 37.⚖️ 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) the string length (c) time for 10 swings
  38. 38.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  39. 39.🧺 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) a battery cell
  40. 40.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?

Answer key

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

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