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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 549 · 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 string is needed for the pendulum. (a) False (b) True
  2. 2.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a pencil and tape (d) a ruler
  4. 4.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a pencil and tape (d) a ruler
  5. 5.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
  6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  7. 7.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
  8. 8.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) turmeric powder (d) a ruler
  9. 9.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
  10. 10.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
  11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it stays the same (d) it halves
  12. 12.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
  13. 13.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  14. 14.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
  15. 15.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a string (d) yeast
  18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil and tape (d) a stopwatch
  19. 19.⚖️ 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
  20. 20.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  21. 21.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  22. 22.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
  23. 23.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  24. 24.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) yeast
  25. 25.⚖️ 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
  26. 26.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) turmeric powder (d) a ruler
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
  29. 29.True or false: a balloon is needed for the pendulum. (a) False (b) True
  30. 30.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  31. 31.⚖️ 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
  32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
  33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
  34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
  35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
  36. 36.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
  37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
  38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
  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 keep it the same (c) we measure it
  40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings

Answer key

  1. True
  2. not needed
  3. a magnet
  4. a balloon
  5. False
  6. needed
  7. a small nut or washer
  8. turmeric powder
  9. 13
  10. 18
  11. it doubles
  12. no, hardly at all
  13. True
  14. a grandfather clock
  15. False
  16. True
  17. a string
  18. yeast
  19. True
  20. True
  21. True
  22. quicker
  23. needed
  24. yeast
  25. we keep it the same
  26. True
  27. turmeric powder
  28. we change it
  29. False
  30. False
  31. False
  32. 15
  33. False
  34. 7
  35. 17
  36. gravity
  37. 9
  38. 18
  39. we keep it the same
  40. how far we pull it back

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