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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 692 · 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.True or false: a string is needed for the pendulum. (a) True (b) False
  2. 2.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a heavy brick (d) a glass bottle
  3. 3.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
  4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a battery cell (d) a stopwatch
  5. 5.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  6. 6.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
  7. 7.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
  8. 8.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
  9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
  10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
  11. 11.⚖️ 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 measure it (b) we change it (c) we keep it the same
  12. 12.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
  13. 13.⚖️ 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
  14. 14.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a magnet (d) yeast
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a string (d) a mirror
  16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a heavy nut or washer (d) a string
  17. 17.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  18. 18.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  19. 19.True or false: a ruler is needed for the pendulum. (a) False (b) True
  20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a string (d) a pencil and tape
  21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
  22. 22.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a battery cell (d) a stopwatch
  23. 23.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  24. 24.🛟 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
  25. 25.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
  26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a digital watch (d) a sundial
  27. 27.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
  29. 29.True or false: a mirror is needed for the pendulum. (a) True (b) False
  30. 30.True or false: a balloon is needed for the pendulum. (a) True (b) False
  31. 31.⚖️ 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
  32. 32.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  33. 33.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a balloon (d) yeast
  34. 34.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the weight of the bob (c) time for 10 swings (d) how far we pull it back
  36. 36.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
  37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
  38. 38.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
  39. 39.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True

Answer key

  1. True
  2. a small nut or washer
  3. True
  4. a battery cell
  5. True
  6. 8
  7. needed
  8. gravity
  9. we keep it the same
  10. we measure it
  11. we keep it the same
  12. no, hardly at all
  13. True
  14. a heavy nut or washer
  15. a mirror
  16. a balloon
  17. not needed
  18. not needed
  19. True
  20. a mirror
  21. 7
  22. a stopwatch
  23. not needed
  24. the bob could hit you
  25. a longer string
  26. a grandfather clock
  27. True
  28. False
  29. False
  30. False
  31. True
  32. 2
  33. a string
  34. False
  35. the string length
  36. not needed
  37. True
  38. False
  39. needed
  40. False

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