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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 85 · 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 ruler is needed for the pendulum. (a) True (b) False
  2. 2.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  3. 3.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  4. 4.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  5. 5.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
  6. 6.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
  8. 8.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a string (d) a heavy nut or washer
  10. 10.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
  11. 11.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
  13. 13.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a pencil and tape
  16. 16.⚖️ 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
  17. 17.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a battery cell (d) a ruler
  18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
  19. 19.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a sundial (d) a digital watch
  20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a pencil and tape (d) a string
  21. 21.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is wet (d) it is magnetic
  22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
  23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
  24. 24.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  25. 25.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
  26. 26.True or false: a string is not needed for the pendulum. (a) False (b) True
  27. 27.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
  29. 29.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  30. 30.⚖️ 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) False (b) True
  31. 31.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a heavy nut or washer (d) a balloon
  32. 32.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
  34. 34.⚖️ 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) True (b) False
  35. 35.True or false: a mirror is needed for the pendulum. (a) False (b) True
  36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
  37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a heavy nut or washer (d) a pencil and tape
  38. 38.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
  39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
  40. 40.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number

Answer key

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

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