Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 884 · 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.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
2. 2.⚖️ 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 same hook (c) the string length (d) the weight of the bob
3. 3.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
4. 4.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
5. 5.⚖️ 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) True (b) False
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a string (d) yeast
7. 7.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a string (d) a stopwatch
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
9. 9.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a magnet (d) a stopwatch
10. 10.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) it is more accurate (d) 10 is a lucky number
11. 11.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a heavy nut or washer (d) a pencil and tape
13. 13.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
14. 14.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.True or false: a mirror is needed for the pendulum. (a) True (b) False
17. 17.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
18. 18.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a ruler (d) a string
19. 19.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
20. 20.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a mirror (d) a string
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a mirror (d) a string
22. 22.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) a ruler (d) a stopwatch
23. 23.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
25. 25.True or false: a string is not needed for the pendulum. (a) True (b) False
26. 26.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
27. 27.⚖️ 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) True (b) False
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a battery cell (c) a heavy nut or washer (d) a pencil and tape
30. 30.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much slower (d) much faster
31. 31.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a ruler (d) a string
32. 32.⚖️ 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
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 battery cell is not needed for the pendulum. (a) False (b) True
35. 35.⚖️ 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
36. 36.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
37. 37.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
38. 38.⚖️ 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) True (b) False
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) time for 10 swings (c) the weight of the bob (d) the same hook

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