Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 610 · 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 kept the same? (a) time for 10 swings (b) how far we pull it back (c) the string length
2. 2.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) yeast (d) a balloon
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
5. 5.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
6. 6.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a battery cell (d) a heavy nut or washer
7. 7.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a string (d) a heavy nut or washer
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a magnet (d) a string
10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
11. 11.True or false: a magnet is needed for the pendulum. (a) False (b) True
12. 12.⚖️ 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) False (b) True
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.True or false: a string is needed for the pendulum. (a) True (b) False
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) turmeric powder (c) a ruler (d) a stopwatch
17. 17.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) yeast (c) turmeric powder (d) a battery cell
18. 18.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
19. 19.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
20. 20.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
22. 22.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) it is more accurate (d) 10 is a lucky number
23. 23.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
24. 24.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
25. 25.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a string (d) yeast
26. 26.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
28. 28.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a ruler (d) a mirror
29. 29.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
30. 30.⚖️ 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 string length (c) the same hook (d) the weight of the bob
31. 31.⚖️ 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) False (b) True
32. 32.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
33. 33.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
34. 34.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a stopwatch (d) a string
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.⚖️ 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
37. 37.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
38. 38.True or false: yeast is needed for the pendulum. (a) False (b) True
39. 39.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
40. 40.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a heavy nut or washer (d) a battery cell

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