Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 825 · 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 the one thing we change? (a) the string length (b) the weight of the bob (c) how far we pull it back (d) time for 10 swings
2. 2.True or false: a mirror is not needed for the pendulum. (a) False (b) True
3. 3.🕰️ 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
4. 4.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
5. 5.True or false: yeast is not needed for the pendulum. (a) False (b) True
6. 6.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) a mirror
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a ruler (d) a stopwatch
11. 11.⚖️ 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
12. 12.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
13. 13.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
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 same hook (c) the weight of the bob (d) how far we pull it back
15. 15.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) turmeric powder (d) a balloon
16. 16.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
17. 17.🕰️ 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
18. 18.True or false: a ruler is needed for the pendulum. (a) False (b) True
19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
20. 20.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.True or false: a magnet is not needed for the pendulum. (a) True (b) False
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 39 seconds?
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
29. 29.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
30. 30.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a mirror (d) a string
32. 32.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
36. 36.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
38. 38.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a string (d) a battery cell

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