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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 814 · 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 turmeric powder for the pendulum? (a) needed (b) not needed
  2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a pencil and tape
  3. 3.True or false: a mirror 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 heavy nut or washer (b) a pencil and tape (c) a ruler (d) a battery cell
  5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
  6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
  7. 7.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more fun (d) it is more accurate
  8. 8.⚖️ 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
  9. 9.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
  10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
  11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
  12. 12.⚖️ 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) False (b) True
  13. 13.🛟 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
  14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
  15. 15.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a string (d) a battery cell
  16. 16.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
  17. 17.True or false: yeast is needed for the pendulum. (a) True (b) False
  18. 18.⚖️ 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
  19. 19.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  20. 20.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
  21. 21.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  22. 22.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
  23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
  24. 24.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
  25. 25.⚖️ 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 keep it the same (c) we change it
  26. 26.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the same hook (c) how far we pull it back (d) the weight of the bob
  28. 28.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
  29. 29.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
  30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  31. 31.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
  32. 32.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
  33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) yeast (d) a stopwatch
  34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a heavy nut or washer (d) a mirror
  35. 35.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) yeast (d) a battery cell
  36. 36.True or false: a ruler is not needed for the pendulum. (a) True (b) False
  37. 37.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a string (d) a balloon
  38. 38.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  39. 39.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  40. 40.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging

Answer key

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

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