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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 962 · 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.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
  2. 2.True or false: a string is not needed for the pendulum. (a) True (b) False
  3. 3.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
  4. 4.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) yeast (d) a ruler
  5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
  6. 6.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) yeast (d) a string
  7. 7.True or false: a magnet is needed for the pendulum. (a) True (b) False
  8. 8.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
  9. 9.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
  10. 10.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
  12. 12.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
  13. 13.⚖️ 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
  14. 14.True or false: yeast is not needed for the pendulum. (a) True (b) False
  15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
  16. 16.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
  17. 17.🛟 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
  18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it stays the same (d) it halves
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) turmeric powder (d) a stopwatch
  20. 20.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
  21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
  22. 22.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
  23. 23.⚖️ 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 string length (c) how far we pull it back (d) the weight of the bob
  24. 24.True or false: a battery cell is needed for the pendulum. (a) False (b) True
  25. 25.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
  26. 26.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
  27. 27.True or false: a mirror is needed for the pendulum. (a) False (b) True
  28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
  29. 29.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
  30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
  31. 31.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
  32. 32.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a magnet (d) a stopwatch
  33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) the string length (d) time for 10 swings
  34. 34.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
  35. 35.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
  36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
  37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) turmeric powder (d) a pencil and tape
  38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
  39. 39.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
  40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) a magnet

Answer key

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

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