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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 265 · 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.⚖️ 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
  2. 2.⚖️ 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) False (b) True
  3. 3.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
  4. 4.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
  5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
  6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
  7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a heavy nut or washer (d) a ruler
  8. 8.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a sundial (d) a grandfather clock
  9. 9.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a string (d) a mirror
  10. 10.True or false: yeast is needed for the pendulum. (a) False (b) True
  11. 11.True or false: a balloon is needed for the pendulum. (a) True (b) False
  12. 12.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a glass bottle (d) a small nut or washer
  13. 13.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  14. 14.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
  15. 15.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  16. 16.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a heavy nut or washer (d) a stopwatch
  17. 17.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) yeast
  18. 18.🧺 Which of these is needed for the pendulum? (a) a string (b) a mirror (c) turmeric powder (d) a battery cell
  19. 19.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
  20. 20.⚖️ 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
  21. 21.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  22. 22.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
  23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
  24. 24.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  25. 25.🕰️ 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
  26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
  27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) a battery cell
  29. 29.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a battery cell (d) yeast
  31. 31.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  32. 32.⚖️ 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
  33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) turmeric powder
  34. 34.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  35. 35.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
  36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a magnet
  37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a mirror
  38. 38.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
  39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
  40. 40.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed

Answer key

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

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