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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 819 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
  2. 2.🔮 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 halves (d) it doubles
  3. 3.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) turmeric powder (c) a heavy nut or washer (d) a string
  5. 5.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
  6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
  8. 8.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
  9. 9.True or false: a balloon is needed for the pendulum. (a) False (b) True
  10. 10.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
  12. 12.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
  13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a stopwatch (c) a string (d) a pencil and tape
  14. 14.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a ruler (d) a mirror
  15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
  16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
  17. 17.⚖️ 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
  18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a string (d) a stopwatch
  19. 19.True or false: a magnet is needed for the pendulum. (a) False (b) True
  20. 20.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) a balloon
  21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) yeast
  22. 22.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  23. 23.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
  24. 24.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  25. 25.True or false: a string is not needed for the pendulum. (a) True (b) False
  26. 26.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a pencil and tape (d) a mirror
  27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
  28. 28.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a magnet (d) a string
  29. 29.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  30. 30.⚖️ 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
  31. 31.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
  32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
  33. 33.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  34. 34.True or false: a balloon is not needed for the pendulum. (a) True (b) False
  35. 35.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a mirror (d) a heavy nut or washer
  37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
  38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
  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) True (b) False
  40. 40.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet

Answer key

  1. a balloon
  2. it doubles
  3. needed
  4. turmeric powder
  5. no, hardly at all
  6. needed
  7. about the same
  8. a small nut or washer
  9. False
  10. not needed
  11. True
  12. gravity
  13. a battery cell
  14. a ruler
  15. 15
  16. the weight of the bob
  17. we change it
  18. a magnet
  19. False
  20. a balloon
  21. yeast
  22. needed
  23. False
  24. not needed
  25. False
  26. a mirror
  27. 17
  28. a string
  29. needed
  30. False
  31. True
  32. False
  33. 3
  34. True
  35. not needed
  36. a mirror
  37. 9
  38. 13
  39. True
  40. the bob could hit you

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