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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 904 · 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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
  2. 2.True or false: a mirror is needed for the pendulum. (a) True (b) False
  3. 3.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  4. 4.True or false: a battery cell is needed for the pendulum. (a) True (b) False
  5. 5.⚖️ 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 weight of the bob (d) time for 10 swings
  6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a string (d) a pencil and tape
  7. 7.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
  8. 8.⚖️ 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 keep it the same (b) we change it (c) we measure it
  9. 9.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
  10. 10.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  11. 11.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
  12. 12.True or false: a balloon is not needed for the pendulum. (a) False (b) True
  13. 13.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a mirror (d) a magnet
  14. 14.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  16. 16.⚖️ 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
  17. 17.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a battery cell (d) a stopwatch
  18. 18.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  19. 19.⚖️ 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 weight of the bob
  20. 20.True or false: a magnet is needed for the pendulum. (a) False (b) True
  21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a battery cell (d) a ruler
  22. 22.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  23. 23.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
  24. 24.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
  25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.⚖️ 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
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
  28. 28.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  29. 29.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) turmeric powder
  30. 30.True or false: a string is not needed for the pendulum. (a) False (b) True
  31. 31.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  32. 32.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a ruler (d) a magnet
  33. 33.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  34. 34.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  35. 35.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
  36. 36.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
  37. 37.True or false: yeast is not needed for the pendulum. (a) False (b) True
  38. 38.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  39. 39.⚖️ 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
  40. 40.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) yeast (d) a heavy nut or washer

Answer key

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

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