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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 264 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a string (d) a heavy nut or washer
  2. 2.True or false: a mirror is not needed for the pendulum. (a) True (b) False
  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.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a battery cell
  6. 6.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
  7. 7.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
  8. 8.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a stopwatch (d) a pencil and tape
  9. 9.True or false: yeast is needed for the pendulum. (a) True (b) False
  10. 10.True or false: a mirror is needed for the pendulum. (a) True (b) False
  11. 11.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
  13. 13.True or false: a balloon is not needed for the pendulum. (a) True (b) False
  14. 14.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
  15. 15.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a magnet (d) a stopwatch
  16. 16.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  17. 17.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  18. 18.True or false: a magnet is needed for the pendulum. (a) False (b) True
  19. 19.⚖️ 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
  20. 20.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a digital watch (d) a sundial
  21. 21.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
  22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
  24. 24.True or false: a string is needed for the pendulum. (a) True (b) False
  25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a ruler (d) a stopwatch
  26. 26.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  27. 27.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a ruler (d) a balloon
  28. 28.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) a battery cell (d) a magnet
  29. 29.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
  30. 30.True or false: yeast is not needed for the pendulum. (a) True (b) False
  31. 31.⚖️ 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) False (b) True
  32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a mirror (d) a string
  33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a stopwatch (d) a ruler
  34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
  35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
  36. 36.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  37. 37.⚖️ 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
  38. 38.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
  40. 40.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?

Answer key

  1. yeast
  2. True
  3. False
  4. a small nut or washer
  5. a battery cell
  6. no, hardly at all
  7. the bob could hit you
  8. a balloon
  9. False
  10. False
  11. False
  12. how far we pull it back
  13. True
  14. it doubles
  15. a stopwatch
  16. not needed
  17. needed
  18. False
  19. we keep it the same
  20. a grandfather clock
  21. True
  22. 8
  23. quicker
  24. True
  25. a magnet
  26. True
  27. a ruler
  28. a pencil and tape
  29. 2
  30. True
  31. False
  32. a mirror
  33. a balloon
  34. False
  35. 6
  36. needed
  37. time for 10 swings
  38. not needed
  39. True
  40. 3

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