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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 185 · 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.

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  1. 1.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  2. 2.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
  4. 4.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  5. 5.⚖️ 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
  6. 6.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
  7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a battery cell (d) a ruler
  8. 8.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
  10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a balloon (d) a stopwatch
  11. 11.⚖️ 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) the same hook (c) how far we pull it back (d) the string length
  12. 12.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  13. 13.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  14. 14.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  15. 15.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  16. 16.⚖️ 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
  17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
  18. 18.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  19. 19.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  20. 20.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
  22. 22.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) one swing is too slow (d) it is more fun
  23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a mirror (d) a pencil and tape
  24. 24.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
  25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
  26. 26.⚖️ 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) False (b) True
  27. 27.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
  28. 28.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  29. 29.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  30. 30.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) yeast (d) a string
  32. 32.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a ruler (d) a battery cell
  33. 33.⚖️ 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
  34. 34.⚖️ 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
  35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
  36. 36.⚖️ 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
  37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a magnet (d) a heavy nut or washer
  38. 38.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
  39. 39.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a heavy nut or washer (d) a string

Answer key

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

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