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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 920 · 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? Which of these is the one thing we change? (a) time for 10 swings (b) the same hook (c) the string length (d) the weight of the bob
  2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
  4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
  5. 5.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
  7. 7.🕰️ 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
  8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
  9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
  10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) yeast
  11. 11.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  12. 12.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) the string (d) magnetism
  13. 13.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
  14. 14.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
  16. 16.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a pencil and tape (d) a magnet
  17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a string (d) a stopwatch
  18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
  19. 19.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
  20. 20.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  21. 21.⚖️ 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
  22. 22.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  23. 23.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  24. 24.⚖️ 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
  25. 25.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
  26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
  27. 27.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  28. 28.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  29. 29.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a balloon (d) a string
  30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) a balloon
  31. 31.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a stopwatch (d) a pencil and tape
  33. 33.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  34. 34.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) a mirror
  36. 36.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a shorter string (d) a heavier bob
  37. 37.True or false: yeast is needed for the pendulum. (a) True (b) False
  38. 38.⚖️ 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 weight of the bob (c) time for 10 swings
  39. 39.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  40. 40.True or false: a battery cell is not needed for the pendulum. (a) True (b) False

Answer key

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

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