Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 289 · 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: yeast is not 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 weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a string (d) a pencil and tape
6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
7. 7.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a magnet
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) a heavy nut or washer (d) a balloon
10. 10.True or false: a magnet is needed for the pendulum. (a) True (b) False
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) yeast (d) a ruler
12. 12.True or false: a battery cell is needed for the pendulum. (a) True (b) False
13. 13.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) one swing is too slow (d) 10 is a lucky number
14. 14.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
19. 19.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a mirror (d) a string
20. 20.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) it stops swinging (d) yes, much slower
21. 21.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
22. 22.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
23. 23.⚖️ 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 string length (c) the weight of the bob
24. 24.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a pencil and tape (d) a stopwatch
26. 26.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a string (c) a stopwatch (d) a pencil and tape
27. 27.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a mirror (c) a heavy nut or washer (d) a string
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a stopwatch (d) a heavy nut or washer
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
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 stopwatch (b) a heavy nut or washer (c) a balloon (d) a ruler
33. 33.True or false: yeast is needed for the pendulum. (a) False (b) True
34. 34.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a magnet (d) a pencil and tape
35. 35.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
36. 36.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
37. 37.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
39. 39.True or false: a balloon is needed for the pendulum. (a) True (b) False
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True

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