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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 968 · 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.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a heavy nut or washer (d) a stopwatch
  2. 2.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
  3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
  4. 4.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
  5. 5.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
  6. 6.🧺 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 balloon
  7. 7.⚖️ 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 measure it (c) we keep it the same
  8. 8.⚖️ 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) True (b) False
  9. 9.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
  11. 11.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  12. 12.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a string (d) turmeric powder
  13. 13.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) time for 10 swings (d) the same hook
  15. 15.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
  16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
  17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we keep it the same (b) we change it (c) we measure it
  18. 18.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a stopwatch (d) a mirror
  19. 19.⚖️ 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
  20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a string (c) a heavy nut or washer (d) a stopwatch
  21. 21.⚖️ 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
  22. 22.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  23. 23.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a grandfather clock (d) a phone
  24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a string (d) a heavy nut or washer
  25. 25.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  26. 26.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  27. 27.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  28. 28.🧺 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) turmeric powder
  29. 29.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
  30. 30.⚖️ 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) True (b) False
  31. 31.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the string length
  32. 32.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  33. 33.True or false: a mirror is needed for the pendulum. (a) True (b) False
  34. 34.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  35. 35.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
  36. 36.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  37. 37.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
  39. 39.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  40. 40.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False

Answer key

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

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