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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 897 · 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: the same hook is the one thing we change. (a) True (b) False
  2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) a balloon
  3. 3.True or false: yeast is not needed for the pendulum. (a) True (b) False
  4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
  5. 5.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a string (d) a magnet
  7. 7.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  8. 8.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
  9. 9.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
  11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
  12. 12.⚖️ 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 same hook (c) the string length
  13. 13.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a stopwatch (d) a string
  15. 15.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a magnet (d) a balloon
  16. 16.⚖️ 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) how far we pull it back (c) the string length (d) the same hook
  17. 17.🔮 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 halves (d) it doubles
  18. 18.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a stopwatch (d) a battery cell
  20. 20.True or false: a balloon is needed for the pendulum. (a) True (b) False
  21. 21.⚖️ 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 change it (c) we measure it
  22. 22.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a ruler (c) a heavy nut or washer (d) a pencil and tape
  23. 23.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
  25. 25.🛟 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
  26. 26.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  27. 27.True or false: a mirror is needed for the pendulum. (a) True (b) False
  28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a heavy nut or washer (d) a ruler
  29. 29.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  30. 30.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  31. 31.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a pencil and tape (d) a balloon
  32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) turmeric powder (d) a string
  33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
  34. 34.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a magnet (d) a pencil and tape
  35. 35.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) yes, much slower (d) no, hardly at all
  36. 36.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  37. 37.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a phone (d) a sundial
  38. 38.True or false: a string is needed for the pendulum. (a) False (b) True
  39. 39.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a mirror (d) a pencil and tape
  40. 40.True or false: yeast is needed for the pendulum. (a) False (b) True

Answer key

  1. False
  2. a balloon
  3. True
  4. False
  5. a small nut or washer
  6. a magnet
  7. needed
  8. 15
  9. needed
  10. about the same
  11. quicker
  12. the same hook
  13. 1
  14. a mirror
  15. a stopwatch
  16. time for 10 swings
  17. it doubles
  18. needed
  19. a battery cell
  20. False
  21. we change it
  22. yeast
  23. gravity
  24. we keep it the same
  25. the bob could hit you
  26. needed
  27. False
  28. yeast
  29. 3
  30. True
  31. a balloon
  32. turmeric powder
  33. 20
  34. a pencil and tape
  35. no, hardly at all
  36. False
  37. a grandfather clock
  38. True
  39. a mirror
  40. False

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