Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 879 · 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.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a mirror (c) a string (d) a stopwatch
2. 2.⚖️ 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) how far we pull it back
3. 3.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
4. 4.⚖️ 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) how far we pull it back (c) the string length (d) the same hook
5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a battery cell (c) a heavy nut or washer (d) a string
7. 7.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
8. 8.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
9. 9.⚖️ 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 change it (c) we measure it
10. 10.⚖️ 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
11. 11.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) yeast
16. 16.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) turmeric powder (d) a magnet
17. 17.⚖️ 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
18. 18.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
19. 19.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
20. 20.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
21. 21.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) yeast (d) a mirror
22. 22.True or false: a ruler is needed for the pendulum. (a) False (b) True
23. 23.⚖️ 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) False (b) True
24. 24.⚖️ 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
25. 25.⚖️ 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) the same hook (d) how far we pull it back
26. 26.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a string (d) a heavy nut or washer
29. 29.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
30. 30.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
31. 31.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
32. 32.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a stopwatch (d) a string
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) a balloon
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) yeast (d) a heavy nut or washer
36. 36.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
37. 37.⚖️ 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 change it (c) we measure it
38. 38.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
39. 39.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
40. 40.True or false: a magnet is needed for the pendulum. (a) False (b) True

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