Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 749 · 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.⚖️ 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) time for 10 swings (c) the weight of the bob (d) how far we pull it back
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a heavy nut or washer (d) a pencil and tape
3. 3.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
4. 4.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a ruler (d) turmeric powder
6. 6.True or false: a string is needed for the pendulum. (a) True (b) False
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
8. 8.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
9. 9.True or false: yeast is not needed for the pendulum. (a) True (b) False
10. 10.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a mirror (c) yeast (d) a magnet
11. 11.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a battery cell (d) yeast
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) True (b) False
13. 13.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.⚖️ 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) True (b) False
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
17. 17.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a sundial (d) a phone
18. 18.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
21. 21.⚖️ 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) True (b) False
22. 22.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a battery cell (d) turmeric powder
23. 23.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a balloon
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
25. 25.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
26. 26.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
27. 27.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
28. 28.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) turmeric powder (d) a stopwatch
29. 29.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
32. 32.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
33. 33.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
35. 35.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.True or false: a string is not needed for the pendulum. (a) False (b) True

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