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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 423 · 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.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  2. 2.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a ruler (d) a string
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
  4. 4.🛟 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
  5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a string (d) a battery cell
  6. 6.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  7. 7.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
  8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
  9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a pencil and tape (d) a string
  10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a ruler (d) a pencil and tape
  11. 11.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  12. 12.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
  13. 13.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  14. 14.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a string (d) a mirror
  15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
  16. 16.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
  17. 17.True or false: a balloon is needed for the pendulum. (a) False (b) True
  18. 18.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a magnet (d) a balloon
  19. 19.⚖️ 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) the weight of the bob (c) time for 10 swings (d) the same hook
  20. 20.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  21. 21.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) yeast (d) a balloon
  23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
  24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
  25. 25.⚖️ 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
  26. 26.True or false: a mirror is not needed for the pendulum. (a) True (b) False
  27. 27.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  28. 28.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  29. 29.⚖️ 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 measure it (c) we change it
  30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a heavy nut or washer (d) a balloon
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a ruler (d) yeast
  32. 32.⚖️ 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
  33. 33.True or false: a string is needed for the pendulum. (a) False (b) True
  34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
  35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a pencil and tape (d) turmeric powder
  36. 36.⚖️ 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
  37. 37.⚖️ 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) True (b) False
  38. 38.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
  39. 39.⚖️ 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
  40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

Answer key

  1. True
  2. a battery cell
  3. False
  4. the bob could hit you
  5. a battery cell
  6. 1
  7. quicker
  8. 15
  9. a balloon
  10. a magnet
  11. not needed
  12. a grandfather clock
  13. False
  14. a mirror
  15. 6
  16. 7
  17. False
  18. a pencil and tape
  19. time for 10 swings
  20. not needed
  21. needed
  22. a stopwatch
  23. 17
  24. False
  25. True
  26. True
  27. needed
  28. 2
  29. we keep it the same
  30. a heavy nut or washer
  31. yeast
  32. False
  33. True
  34. False
  35. turmeric powder
  36. the weight of the bob
  37. False
  38. a small nut or washer
  39. True
  40. needed

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