Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 218 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) turmeric powder
2. 2.🔮 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
3. 3.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
4. 4.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
5. 5.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a ruler (c) a heavy nut or washer (d) a pencil and tape
6. 6.⚖️ 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
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
8. 8.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
10. 10.🧺 Which of these is needed for the pendulum? (a) a ruler (b) yeast (c) a mirror (d) a magnet
11. 11.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) yeast (c) a heavy nut or washer (d) a pencil and tape
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ 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 same hook (c) time for 10 swings (d) the weight of the bob
19. 19.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
20. 20.⚖️ 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 string length (d) the same hook
21. 21.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
22. 22.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a string
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a pencil and tape (d) a heavy nut or washer
24. 24.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
25. 25.True or false: a string is needed for the pendulum. (a) True (b) False
26. 26.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a pencil and tape (d) a battery cell
29. 29.True or false: a ruler is needed for the pendulum. (a) True (b) False
30. 30.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) turmeric powder (d) a stopwatch
31. 31.⚖️ 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 keep it the same (c) we change it
32. 32.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
33. 33.True or false: a balloon is not needed for the pendulum. (a) True (b) False
34. 34.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
35. 35.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a magnet
37. 37.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
39. 39.True or false: a mirror 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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