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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 144 · 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.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  2. 2.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a balloon (d) a ruler
  3. 3.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
  4. 4.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
  5. 5.True or false: a battery cell is needed for the pendulum. (a) True (b) False
  6. 6.True or false: a string is needed for the pendulum. (a) False (b) True
  7. 7.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a stopwatch (d) a ruler
  8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the weight of the bob (c) the string length (d) time for 10 swings
  9. 9.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  10. 10.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  11. 11.🛟 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
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the string length (d) time for 10 swings
  13. 13.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
  14. 14.True or false: yeast is needed for the pendulum. (a) True (b) False
  15. 15.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
  16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a stopwatch (d) a ruler
  17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
  18. 18.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  19. 19.⚖️ 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
  20. 20.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) 10 is a lucky number (d) it is more accurate
  21. 21.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a magnet (d) a heavy nut or washer
  23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the same hook
  24. 24.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  25. 25.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
  26. 26.⚖️ 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 measure it (c) we change it
  27. 27.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  28. 28.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a pencil and tape (d) a balloon
  29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a ruler (d) a stopwatch
  30. 30.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a ruler (d) a string
  31. 31.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  32. 32.⚖️ 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
  33. 33.⚖️ 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
  34. 34.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a string (d) a battery cell
  36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
  37. 37.True or false: a string is not needed for the pendulum. (a) True (b) False
  38. 38.True or false: a mirror is needed for the pendulum. (a) False (b) True
  39. 39.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  40. 40.🧺 Do we need a string for the pendulum? (a) needed (b) not needed

Answer key

  1. 3
  2. a ruler
  3. 9
  4. gravity
  5. False
  6. True
  7. a battery cell
  8. the string length
  9. True
  10. not needed
  11. a small nut or washer
  12. time for 10 swings
  13. the bob could hit you
  14. False
  15. quicker
  16. a mirror
  17. about the same
  18. 1
  19. we measure it
  20. it is more accurate
  21. needed
  22. a magnet
  23. the same hook
  24. needed
  25. 3
  26. we change it
  27. 2
  28. a pencil and tape
  29. a balloon
  30. yeast
  31. not needed
  32. True
  33. True
  34. True
  35. a battery cell
  36. True
  37. False
  38. False
  39. False
  40. needed

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