Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 410 · 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? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔮 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 halves (d) it doubles
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a balloon
4. 4.⚖️ 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
5. 5.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
6. 6.⚖️ 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
7. 7.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
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 magnet (d) a pencil and tape
10. 10.⚖️ 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
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
12. 12.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
13. 13.True or false: a string is needed for the pendulum. (a) True (b) False
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
17. 17.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
18. 18.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
19. 19.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
20. 20.⚖️ 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
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) turmeric powder
23. 23.⚖️ 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 change it (c) we measure it
24. 24.⚖️ 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 same hook (c) the string length
25. 25.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
27. 27.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a balloon (d) a pencil and tape
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a ruler (d) a pencil and tape
29. 29.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
30. 30.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
32. 32.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) a string (d) a pencil and tape
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
34. 34.True or false: a ruler is not needed for the pendulum. (a) True (b) False
35. 35.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
36. 36.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
37. 37.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
38. 38.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
39. 39.True or false: a magnet is needed for the pendulum. (a) False (b) True
40. 40.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?

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