Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 524 · 40 questions

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.

1. 1.True or false: a string is needed for the pendulum. (a) False (b) True
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it becomes 4 times (d) it doubles
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
5. 5.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
6. 6.⚖️ 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 measure it (c) we change it
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is hot (d) it is wet
8. 8.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a string (c) a pencil and tape (d) a ruler
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
10. 10.True or false: a magnet is needed for the pendulum. (a) False (b) True
11. 11.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
12. 12.⚖️ 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) the string length (c) time for 10 swings (d) how far we pull it back
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the weight of the bob (c) time for 10 swings (d) the same hook
14. 14.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
15. 15.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a mirror (d) a stopwatch
17. 17.True or false: a ruler is needed for the pendulum. (a) True (b) False
18. 18.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a magnet (d) a string
19. 19.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
20. 20.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
21. 21.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
22. 22.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
23. 23.⚖️ 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
24. 24.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a heavy nut or washer (d) a stopwatch
26. 26.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
27. 27.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a ruler (d) a magnet
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.⚖️ 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
30. 30.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
31. 31.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a string (c) a heavy nut or washer (d) a stopwatch
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a ruler (d) a mirror
35. 35.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the same hook (c) the string length
37. 37.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
38. 38.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a mirror (d) yeast
39. 39.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
40. 40.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?

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