← Simple pendulum timing lesson New set →

Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 859 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) heavier (d) quicker
  2. 2.⚖️ 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 weight of the bob (c) the same hook (d) the string length
  3. 3.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  4. 4.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  5. 5.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a balloon (d) a stopwatch
  6. 6.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a pencil and tape (d) a ruler
  7. 7.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  8. 8.🕰️ 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
  9. 9.True or false: a string is not needed for the pendulum. (a) True (b) False
  10. 10.🛟 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
  11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it stays the same (d) it becomes 4 times
  12. 12.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
  13. 13.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  14. 14.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a stopwatch (d) yeast
  16. 16.⚖️ 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) True (b) False
  17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
  18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) yeast (c) a heavy nut or washer (d) a string
  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 change it (b) we measure it (c) we keep it the same
  22. 22.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  23. 23.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a digital watch (d) a phone
  24. 24.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  25. 25.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  26. 26.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  27. 27.⚖️ 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) the weight of the bob
  28. 28.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  29. 29.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  30. 30.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a ruler (d) a battery cell
  32. 32.True or false: a magnet is needed for the pendulum. (a) False (b) True
  33. 33.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
  35. 35.🧺 Which of these is needed for the pendulum? (a) yeast (b) a string (c) turmeric powder (d) a magnet
  36. 36.⚖️ 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) False (b) True
  37. 37.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
  38. 38.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
  39. 39.⚖️ 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
  40. 40.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed

Answer key

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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids