Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 739 · 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) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
2. 2.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
3. 3.🕰️ 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
4. 4.⚖️ 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
5. 5.🔮 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 halves (d) it becomes 4 times
6. 6.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a battery cell (d) turmeric powder
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a stopwatch (d) a string
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.⚖️ 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
10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
11. 11.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
12. 12.True or false: a balloon is not needed for the pendulum. (a) True (b) False
13. 13.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 33 seconds?
14. 14.True or false: yeast is not needed for the pendulum. (a) False (b) True
15. 15.True or false: a magnet is not needed for the pendulum. (a) True (b) False
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
18. 18.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
21. 21.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
22. 22.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) the same hook (d) time for 10 swings
24. 24.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
26. 26.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a mirror (c) a pencil and tape (d) a string
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a string
29. 29.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) a mirror (d) a balloon
30. 30.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
31. 31.⚖️ 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 keep it the same (c) we change it
32. 32.True or false: a string is not needed for the pendulum. (a) True (b) False
33. 33.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
34. 34.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
35. 35.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a pencil and tape (d) a mirror
36. 36.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) a magnet
38. 38.True or false: yeast is needed for the pendulum. (a) False (b) True
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?

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