Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 69 · 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) how far we pull it back (c) the string length (d) the weight of the bob
2. 2.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a magnet (d) a battery cell
4. 4.⚖️ 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
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
7. 7.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
8. 8.⚖️ 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 measure it (c) we change it
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) a balloon
10. 10.⚖️ 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) True (b) False
11. 11.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
12. 12.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) yeast (c) turmeric powder (d) a battery cell
13. 13.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
14. 14.True or false: a string is not needed for the pendulum. (a) True (b) False
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a pencil and tape (d) a ruler
16. 16.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
18. 18.True or false: a balloon is needed for the pendulum. (a) True (b) False
19. 19.True or false: a ruler is not needed for the pendulum. (a) False (b) True
20. 20.🧺 Which of these is needed for the pendulum? (a) a string (b) yeast (c) turmeric powder (d) a magnet
21. 21.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
22. 22.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a ruler (d) a stopwatch
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
24. 24.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
25. 25.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
27. 27.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
28. 28.True or false: a string is needed for the pendulum. (a) False (b) True
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the weight of the bob
30. 30.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a string (d) a ruler
31. 31.True or false: a magnet is needed for the pendulum. (a) True (b) False
32. 32.⚖️ 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
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
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) False (b) True
35. 35.⚖️ 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
36. 36.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
37. 37.⚖️ 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
38. 38.True or false: a heavy nut or washer is not 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 same hook is what we measure. (a) True (b) False
40. 40.⚖️ 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 measure it (c) we change it

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