Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 463 · 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 needed for the pendulum? (a) a magnet (b) a battery cell (c) turmeric powder (d) a stopwatch
2. 2.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
3. 3.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
4. 4.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) turmeric powder (d) a ruler
5. 5.⚖️ 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
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the same hook (c) the string length (d) the weight of the bob
7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
8. 8.⚖️ 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
9. 9.🔮 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
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
11. 11.True or false: a string is needed for the pendulum. (a) False (b) True
12. 12.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
13. 13.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) yeast (d) a pencil and tape
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a pencil and tape (d) a balloon
16. 16.True or false: a balloon is not needed for the pendulum. (a) False (b) True
17. 17.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a stopwatch (c) a ruler (d) a heavy nut or washer
18. 18.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) turmeric powder (d) a heavy nut or washer
19. 19.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
20. 20.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a heavy nut or washer (d) yeast
22. 22.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
24. 24.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
25. 25.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the wind (d) the string
26. 26.⚖️ 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
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
29. 29.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
30. 30.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) yeast (d) a balloon
32. 32.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a mirror (d) a ruler
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a pencil and tape (d) a stopwatch
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
37. 37.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
38. 38.⚖️ 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 keep it the same (c) we change it
39. 39.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
40. 40.True or false: a mirror is not needed for the pendulum. (a) False (b) True

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