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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 895 · 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 mirror (b) a stopwatch (c) a string (d) a heavy nut or washer
  2. 2.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
  3. 3.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  4. 4.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
  5. 5.🕰️ 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) 10 is a lucky number (d) it is more accurate
  6. 6.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
  7. 7.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a magnet (d) a ruler
  9. 9.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
  10. 10.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
  11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
  12. 12.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
  13. 13.⚖️ 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
  14. 14.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
  15. 15.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  16. 16.⚖️ 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
  17. 17.⚖️ 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
  18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
  19. 19.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
  21. 21.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
  22. 22.True or false: a string is needed for the pendulum. (a) False (b) True
  23. 23.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
  24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a stopwatch (d) a string
  25. 25.True or false: a ruler is needed for the pendulum. (a) True (b) False
  26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the string length (c) time for 10 swings (d) how far we pull it back
  28. 28.True or false: a magnet is not needed for the pendulum. (a) False (b) True
  29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
  30. 30.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  31. 31.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) yeast (c) a battery cell (d) a balloon
  32. 32.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  33. 33.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
  34. 34.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a string (d) a heavy nut or washer
  35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
  36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
  37. 37.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much slower (d) yes, much faster
  38. 38.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) turmeric powder (d) a ruler
  39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
  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. a mirror
  2. quicker
  3. not needed
  4. a small nut or washer
  5. it is more accurate
  6. True
  7. not needed
  8. a magnet
  9. gravity
  10. 12
  11. the bob could hit you
  12. True
  13. False
  14. a longer string
  15. 2
  16. we change it
  17. we keep it the same
  18. 6
  19. False
  20. False
  21. it doubles
  22. True
  23. True
  24. yeast
  25. True
  26. 5
  27. time for 10 swings
  28. True
  29. False
  30. not needed
  31. a stopwatch
  32. 1
  33. not needed
  34. a mirror
  35. False
  36. 14
  37. no, hardly at all
  38. a ruler
  39. 20
  40. how far we pull it back

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