← Simple pendulum timing lesson New set →

Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 507 · 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 magnet (b) a balloon (c) a pencil and tape (d) a mirror
  2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a stopwatch (d) a pencil and tape
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) time for 10 swings (d) the string length
  4. 4.⚖️ 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
  5. 5.⚖️ 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) True (b) False
  6. 6.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
  7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) how far we pull it back (c) the string length (d) time for 10 swings
  8. 8.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a balloon (d) a string
  9. 9.⚖️ 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
  10. 10.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  11. 11.True or false: a string is not needed for the pendulum. (a) True (b) False
  12. 12.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  13. 13.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  14. 14.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a ruler (d) a string
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) yeast
  16. 16.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  17. 17.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
  18. 18.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  19. 19.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
  20. 20.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
  21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
  22. 22.⚖️ 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 keep it the same (c) we measure it
  23. 23.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  24. 24.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  25. 25.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
  26. 26.⚖️ 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) False (b) True
  27. 27.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  28. 28.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  29. 29.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  30. 30.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  31. 31.⚖️ 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
  32. 32.🔮 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
  33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
  34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
  35. 35.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
  36. 36.True or false: a ruler is not needed for the pendulum. (a) True (b) False
  37. 37.⚖️ 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
  38. 38.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
  40. 40.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a heavy nut or washer (d) a magnet

Answer key

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

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