Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 489 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) time for 10 swings (c) the string length (d) the same hook
3. 3.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
4. 4.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a ruler (c) a heavy nut or washer (d) a stopwatch
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
6. 6.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
7. 7.True or false: a battery cell is needed for the pendulum. (a) False (b) True
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) how far we pull it back (d) the same hook
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) yeast
10. 10.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
11. 11.True or false: yeast is needed for the pendulum. (a) True (b) False
12. 12.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
13. 13.⚖️ 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
14. 14.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
15. 15.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
16. 16.⚖️ 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 measure it (c) we change it
17. 17.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) turmeric powder (d) a ruler
19. 19.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) turmeric powder (d) yeast
20. 20.True or false: a string is not needed for the pendulum. (a) True (b) False
21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
24. 24.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) turmeric powder (d) a balloon
25. 25.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a battery cell (c) yeast (d) a magnet
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
27. 27.⚖️ 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
28. 28.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
29. 29.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a grandfather clock (d) a digital watch
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a balloon (d) a stopwatch
31. 31.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
34. 34.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) turmeric powder (d) a mirror
35. 35.True or false: a ruler is not needed for the pendulum. (a) True (b) False
36. 36.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a magnet (c) a string (d) a stopwatch
37. 37.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a ruler (d) a string
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
40. 40.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed

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