← Simple pendulum timing lesson New set →

Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 162 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
  2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
  3. 3.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  4. 4.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
  6. 6.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
  7. 7.⚖️ 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
  8. 8.True or false: a magnet is needed for the pendulum. (a) True (b) False
  9. 9.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a battery cell (d) a balloon
  10. 10.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
  11. 11.⚖️ 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
  12. 12.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  13. 13.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  14. 14.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
  15. 15.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  16. 16.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
  18. 18.⚖️ 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) time for 10 swings (c) the string length (d) the same hook
  19. 19.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) gravity (d) the wind
  20. 20.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) turmeric powder (d) a stopwatch
  21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (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) a stopwatch (b) a mirror (c) a string (d) a ruler
  23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
  25. 25.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a battery cell (d) a heavy nut or washer
  27. 27.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) a mirror (d) turmeric powder
  28. 28.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  29. 29.True or false: a string is not needed for the pendulum. (a) False (b) True
  30. 30.🕰️ 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) one swing is too slow (d) it is more fun
  31. 31.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  32. 32.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  33. 33.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a sharp tool (d) a heavy brick
  34. 34.True or false: a ruler is needed for the pendulum. (a) True (b) False
  35. 35.🔮 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
  36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a string (d) a balloon
  37. 37.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  38. 38.True or false: a battery cell is needed for the pendulum. (a) True (b) False
  39. 39.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a balloon
  40. 40.🧺 Do we need a string for the pendulum? (a) not needed (b) needed

Answer key

  1. about the same
  2. we change it
  3. False
  4. False
  5. the bob could hit you
  6. a longer string
  7. False
  8. False
  9. a pencil and tape
  10. quicker
  11. True
  12. not needed
  13. False
  14. 12
  15. not needed
  16. 8
  17. the same hook
  18. the string length
  19. gravity
  20. a stopwatch
  21. we measure it
  22. a mirror
  23. 6
  24. we keep it the same
  25. True
  26. a battery cell
  27. a ruler
  28. 3
  29. False
  30. it is more accurate
  31. True
  32. not needed
  33. a small nut or washer
  34. True
  35. it doubles
  36. a balloon
  37. True
  38. False
  39. a balloon
  40. needed

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