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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 394 · 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 takes 2 seconds for one swing. How many swings does it make in 20 seconds?
  2. 2.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
  3. 3.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
  5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
  6. 6.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
  7. 7.⚖️ 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) True (b) False
  8. 8.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  9. 9.⚖️ 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
  10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
  11. 11.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
  12. 12.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a string (d) yeast
  13. 13.🧺 Which of these is needed for the pendulum? (a) yeast (b) a string (c) a magnet (d) a mirror
  14. 14.⚖️ 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
  15. 15.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) it is more accurate (d) one swing is too slow
  16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) time for 10 swings (d) the string length
  17. 17.⚖️ 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
  18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a stopwatch (d) a balloon
  19. 19.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  20. 20.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
  21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) yeast
  22. 22.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
  23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a ruler (d) a string
  24. 24.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  25. 25.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  26. 26.⚖️ 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
  27. 27.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  28. 28.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
  29. 29.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a ruler (d) a balloon
  31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
  32. 32.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  33. 33.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  34. 34.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  36. 36.⚖️ 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
  37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a magnet (d) a pencil and tape
  38. 38.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  39. 39.True or false: a ruler is needed for the pendulum. (a) True (b) False
  40. 40.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed

Answer key

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

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