← Simple pendulum timing lesson New set →

Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 8 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
  2. 2.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a mirror (d) a stopwatch
  3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a stopwatch (d) a string
  4. 4.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a string (d) a battery cell
  6. 6.⚖️ 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
  7. 7.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
  9. 9.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
  10. 10.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
  11. 11.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a heavy nut or washer (d) a mirror
  12. 12.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
  13. 13.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  14. 14.⚖️ 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
  15. 15.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
  16. 16.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a string (c) a stopwatch (d) a heavy nut or washer
  18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
  19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a stopwatch (d) a magnet
  20. 20.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
  22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a string (d) a battery cell
  23. 23.⚖️ 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
  24. 24.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  25. 25.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  26. 26.True or false: a mirror is needed for the pendulum. (a) True (b) False
  27. 27.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  28. 28.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) it is more fun (d) one swing is too slow
  29. 29.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a heavy nut or washer (d) a pencil and tape
  31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
  32. 32.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
  33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  34. 34.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
  35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
  36. 36.True or false: yeast is not needed for the pendulum. (a) False (b) True
  37. 37.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
  38. 38.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) yeast (d) a ruler
  39. 39.True or false: a string is needed for the pendulum. (a) False (b) True
  40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same

Answer key

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

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