Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 779 · 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 do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) it is more accurate (d) 10 is a lucky number
2. 2.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
3. 3.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a battery cell (d) a string
5. 5.🕰️ 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
6. 6.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
8. 8.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
9. 9.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a stopwatch (d) a string
10. 10.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
11. 11.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a stopwatch (d) a ruler
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
16. 16.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) a mirror (d) yeast
17. 17.True or false: a string is needed for the pendulum. (a) False (b) True
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
20. 20.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a mirror (d) a heavy nut or washer
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the weight of the bob
22. 22.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the weight of the bob (d) how far we pull it back
27. 27.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a magnet (d) a stopwatch
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
29. 29.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
30. 30.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a string (d) a magnet
33. 33.⚖️ 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) True (b) False
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a ruler (d) a balloon
37. 37.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
38. 38.⚖️ 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) True (b) False
39. 39.⚖️ 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
40. 40.True or false: a magnet is needed for the pendulum. (a) False (b) True

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