Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 436 · 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.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
2. 2.True or false: a balloon is needed for the pendulum. (a) True (b) False
3. 3.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
4. 4.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
5. 5.🛟 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
6. 6.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
7. 7.True or false: a string is not needed for the pendulum. (a) True (b) False
8. 8.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a pencil and tape (d) a heavy nut or washer
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) how far we pull it back (c) time for 10 swings (d) the string length
10. 10.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) a magnet
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the string length (c) time for 10 swings (d) how far we pull it back
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a pencil and tape (d) a stopwatch
14. 14.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a battery cell (d) a magnet
15. 15.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
16. 16.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
21. 21.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a string (d) a pencil and tape
22. 22.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
23. 23.⚖️ 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
24. 24.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
25. 25.⚖️ 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
26. 26.True or false: a magnet is needed for the pendulum. (a) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a ruler (d) a stopwatch
29. 29.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
30. 30.True or false: a ruler is needed for the pendulum. (a) True (b) False
31. 31.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a stopwatch (d) a string
33. 33.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a ruler (d) a heavy nut or washer
34. 34.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) turmeric powder (d) a pencil and tape
35. 35.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a string (d) yeast
36. 36.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
37. 37.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the weight of the bob (c) time for 10 swings
39. 39.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a balloon (d) a stopwatch
40. 40.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed

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