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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 178 · 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.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  2. 2.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  3. 3.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
  4. 4.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  5. 5.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
  6. 6.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  7. 7.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a ruler (c) a pencil and tape (d) a heavy nut or washer
  8. 8.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
  9. 9.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  10. 10.⚖️ 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) True (b) False
  11. 11.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a stopwatch (c) a pencil and tape (d) a string
  12. 12.⚖️ 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
  13. 13.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
  14. 14.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a pencil and tape (d) yeast
  15. 15.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a balloon (d) a heavy nut or washer
  16. 16.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) turmeric powder (d) a balloon
  17. 17.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a balloon (d) a string
  18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
  19. 19.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
  20. 20.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
  21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
  22. 22.⚖️ 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
  23. 23.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a pencil and tape (d) a battery cell
  24. 24.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) a balloon
  26. 26.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  27. 27.⚖️ 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) how far we pull it back
  28. 28.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
  29. 29.⚖️ 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
  30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
  31. 31.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
  32. 32.🕰️ 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) it is more accurate (d) 10 is a lucky number
  33. 33.⚖️ 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 string length (c) how far we pull it back (d) the weight of the bob
  34. 34.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much slower (d) much faster
  35. 35.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
  37. 37.True or false: a magnet is not needed for the pendulum. (a) True (b) False
  38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
  39. 39.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  40. 40.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?

Answer key

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

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