Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 773 · 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 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
2. 2.⚖️ 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
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
4. 4.⚖️ 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
5. 5.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
6. 6.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a sundial (d) a digital watch
7. 7.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
8. 8.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) turmeric powder (d) a ruler
9. 9.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
10. 10.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a balloon (c) a string (d) a ruler
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: time for 10 swings is what we measure. (a) False (b) True
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a pencil and tape (d) yeast
14. 14.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
15. 15.⚖️ 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) the same hook (c) time for 10 swings (d) the string length
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a string
17. 17.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
19. 19.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a ruler (d) a magnet
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.True or false: a string is not needed for the pendulum. (a) True (b) False
22. 22.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
23. 23.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
24. 24.🔮 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
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a string (d) a heavy nut or washer
26. 26.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
27. 27.⚖️ 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
28. 28.⚖️ 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) time for 10 swings (d) the same hook
29. 29.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a magnet (d) a pencil and tape
32. 32.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
33. 33.True or false: a balloon is needed for the pendulum. (a) True (b) False
34. 34.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
35. 35.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) yeast (c) a mirror (d) turmeric powder
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a battery cell
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

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