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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 342 · 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.True or false: a string is not needed for the pendulum. (a) True (b) False
  2. 2.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
  3. 3.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  4. 4.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much slower (d) much faster
  6. 6.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  7. 7.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) yeast (d) turmeric powder
  8. 8.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a ruler (d) a string
  9. 9.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a magnet (d) a string
  10. 10.True or false: a string is needed for the pendulum. (a) False (b) True
  11. 11.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  12. 12.🔮 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 stays the same (d) it doubles
  13. 13.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
  14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  15. 15.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) time for 10 swings (c) the string length
  17. 17.⚖️ 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
  18. 18.⚖️ 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
  19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a battery cell (d) a heavy nut or washer
  20. 20.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
  21. 21.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  22. 22.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  23. 23.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) 10 is a lucky number (d) one swing is too slow
  24. 24.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
  25. 25.True or false: a balloon is not needed for the pendulum. (a) True (b) False
  26. 26.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) yes, much slower (d) it stops swinging
  27. 27.⚖️ 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) True (b) False
  28. 28.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
  30. 30.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  31. 31.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
  32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
  33. 33.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  34. 34.True or false: yeast is not needed for the pendulum. (a) False (b) True
  35. 35.⚖️ 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
  36. 36.⚖️ 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
  37. 37.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a stopwatch (d) turmeric powder
  38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
  39. 39.True or false: yeast is needed for the pendulum. (a) True (b) False
  40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) time for 10 swings (c) the weight of the bob (d) the string length

Answer key

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

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