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Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 313 · 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 heavy nut or washer is needed for the pendulum. (a) True (b) False
  2. 2.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a string (d) a balloon
  3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
  4. 4.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
  5. 5.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
  6. 6.True or false: a mirror is needed for the pendulum. (a) True (b) False
  7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
  8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
  9. 9.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
  10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
  11. 11.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
  12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) time for 10 swings (c) the weight of the bob (d) the string length
  13. 13.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
  14. 14.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
  15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a stopwatch (d) a string
  16. 16.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
  17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a stopwatch (d) a string
  18. 18.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
  19. 19.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a pencil and tape
  20. 20.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a magnet (d) a stopwatch
  21. 21.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
  22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
  23. 23.⚖️ 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) how far we pull it back (d) the string length
  24. 24.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
  25. 25.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
  26. 26.⚖️ 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
  27. 27.🛟 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
  28. 28.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) yeast
  29. 29.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
  30. 30.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
  31. 31.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
  32. 32.True or false: a ruler is not needed for the pendulum. (a) False (b) True
  33. 33.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
  34. 34.True or false: a balloon is needed for the pendulum. (a) False (b) True
  35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
  36. 36.True or false: a string is needed for the pendulum. (a) False (b) True
  37. 37.True or false: a balloon is not needed for the pendulum. (a) True (b) False
  38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
  39. 39.True or false: a mirror is not needed for the pendulum. (a) True (b) False
  40. 40.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a phone (d) a grandfather clock

Answer key

  1. True
  2. a string
  3. False
  4. a small nut or washer
  5. gravity
  6. False
  7. 19
  8. False
  9. it doubles
  10. we change it
  11. 1
  12. the string length
  13. about the same
  14. 2
  15. a battery cell
  16. not needed
  17. a magnet
  18. 17
  19. a magnet
  20. a stopwatch
  21. not needed
  22. False
  23. time for 10 swings
  24. not needed
  25. 1
  26. we measure it
  27. the bob could hit you
  28. yeast
  29. 12
  30. True
  31. turmeric powder
  32. False
  33. 6
  34. False
  35. we keep it the same
  36. True
  37. True
  38. False
  39. True
  40. a grandfather clock

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