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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 944 · 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 heavy nut or washer is not needed for the pendulum. (a) False (b) True
  2. 2.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
  3. 3.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a heavy nut or washer (d) turmeric powder
  4. 4.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) yeast (c) a pencil and tape (d) a heavy nut or washer
  5. 5.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
  6. 6.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) no, hardly at all (d) yes, much slower
  7. 7.⚖️ 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
  8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
  9. 9.True or false: a string is needed for the pendulum. (a) False (b) True
  10. 10.True or false: a mirror is needed for the pendulum. (a) True (b) False
  11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
  12. 12.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
  13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a stopwatch (d) a pencil and tape
  14. 14.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
  15. 15.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
  16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
  17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a string (d) a balloon
  18. 18.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  19. 19.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
  20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
  21. 21.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
  22. 22.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
  23. 23.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  24. 24.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
  25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) time for 10 swings (c) the same hook (d) the string length
  26. 26.True or false: a mirror is not needed for the pendulum. (a) False (b) True
  27. 27.⚖️ 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
  28. 28.⚖️ 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
  29. 29.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 33 seconds?
  30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a ruler (d) a balloon
  31. 31.⚖️ 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
  32. 32.🛟 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
  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) a stopwatch (d) a battery cell
  34. 34.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  35. 35.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  36. 36.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
  37. 37.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
  38. 38.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
  40. 40.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number

Answer key

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

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