Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 590 · 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? True or false: the string length is the one thing we change. (a) True (b) False
2. 2.🛟 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
3. 3.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
4. 4.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much slower (d) yes, much faster
5. 5.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a magnet (d) a battery cell
6. 6.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a heavy nut or washer (c) a magnet (d) a balloon
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a heavy nut or washer (d) turmeric powder
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) a mirror (d) a battery cell
12. 12.⚖️ 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) the string length (c) time for 10 swings (d) how far we pull it back
13. 13.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
14. 14.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
15. 15.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
17. 17.🧺 Which of these is not needed for the pendulum? (a) a string (b) a mirror (c) a heavy nut or washer (d) a ruler
18. 18.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
20. 20.⚖️ 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
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a string
22. 22.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
23. 23.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.⚖️ 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
26. 26.True or false: yeast is needed for the pendulum. (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 keep it the same (c) we change it
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a pencil and tape (d) a heavy nut or washer
30. 30.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
31. 31.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
32. 32.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
33. 33.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a mirror (c) a battery cell (d) a balloon
34. 34.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
35. 35.True or false: a ruler is needed for the pendulum. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
38. 38.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number
39. 39.⚖️ 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
40. 40.⚖️ 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) False (b) True

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