Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 686 · 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) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
2. 2.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
3. 3.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
4. 4.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a magnet (d) a mirror
6. 6.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
7. 7.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
9. 9.⚖️ 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) the string length (c) time for 10 swings (d) the same hook
10. 10.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
11. 11.⚖️ 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
12. 12.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
13. 13.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it stays the same (d) it becomes 4 times
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
15. 15.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
16. 16.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a ruler (d) turmeric powder
17. 17.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a pencil and tape (d) a string
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) turmeric powder (c) a heavy nut or washer (d) a string
20. 20.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.True or false: a balloon is needed for the pendulum. (a) False (b) True
23. 23.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
24. 24.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) yeast (d) a heavy nut or washer
26. 26.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
27. 27.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a balloon (d) a stopwatch
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a battery cell (d) a heavy nut or washer
30. 30.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a shorter string (d) a lighter bob
31. 31.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
32. 32.⚖️ 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 weight of the bob (c) time for 10 swings
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
36. 36.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
37. 37.⚖️ 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) the string length (c) the same hook (d) time for 10 swings
38. 38.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
39. 39.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
40. 40.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed

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