Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 116 · 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 weight of the bob is kept the same. (a) False (b) True
2. 2.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
3. 3.⚖️ 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) True (b) False
4. 4.🛟 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
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? True or false: the same hook is what we measure. (a) True (b) False
7. 7.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a heavy nut or washer (d) a mirror
9. 9.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
10. 10.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
11. 11.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
12. 12.True or false: a mirror is needed for the pendulum. (a) True (b) False
13. 13.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
14. 14.⚖️ 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
15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
16. 16.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a lighter bob (d) a shorter string
17. 17.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) one swing is too slow (d) it is more fun
18. 18.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a stopwatch (d) a magnet
19. 19.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
20. 20.True or false: a balloon is not needed for the pendulum. (a) True (b) False
21. 21.⚖️ 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 weight of the bob (c) the string length
22. 22.⚖️ 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) time for 10 swings (c) the same hook (d) the string length
23. 23.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
24. 24.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a balloon (d) a ruler
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a string (d) a heavy nut or washer
28. 28.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
29. 29.True or false: a mirror is not needed for the pendulum. (a) False (b) True
30. 30.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a pencil and tape (d) a magnet
31. 31.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
32. 32.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
33. 33.True or false: a magnet is not needed for the pendulum. (a) False (b) True
34. 34.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a heavy nut or washer (d) a magnet
35. 35.⚖️ 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
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.True or false: a string is needed for the pendulum. (a) True (b) False
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the weight of the bob
39. 39.🔮 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
40. 40.⚖️ 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

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