Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 129 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
3. 3.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
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 measure it (b) we change it (c) we keep it the same
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🔮 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
9. 9.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) turmeric powder (d) a stopwatch
10. 10.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
14. 14.⚖️ 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 keep it the same (c) we measure it
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 same hook (b) time for 10 swings (c) the string length (d) how far we pull it back
16. 16.True or false: a magnet is not needed for the pendulum. (a) True (b) False
17. 17.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
18. 18.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a battery cell (d) a heavy nut or washer
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the same hook (c) time for 10 swings (d) the weight of the bob
20. 20.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
23. 23.True or false: yeast is not needed for the pendulum. (a) True (b) False
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a battery cell
25. 25.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a string (d) a balloon
26. 26.True or false: a mirror is needed for the pendulum. (a) False (b) True
27. 27.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
28. 28.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
29. 29.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a magnet (d) a pencil and tape
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a pencil and tape
32. 32.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
33. 33.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
36. 36.⚖️ 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
37. 37.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) one swing is too slow (d) 10 is a lucky number
38. 38.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a battery cell (d) a balloon
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
40. 40.⚖️ 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

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