Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 130 · 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? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.True or false: a magnet is needed for the pendulum. (a) True (b) False
3. 3.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
4. 4.True or false: a magnet is not needed for the pendulum. (a) False (b) True
5. 5.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a pencil and tape (d) a battery cell
6. 6.⚖️ 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) the same hook
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
8. 8.True or false: yeast is needed for the pendulum. (a) True (b) False
9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
10. 10.🔮 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 doubles (d) it becomes 4 times
11. 11.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
12. 12.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
13. 13.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a magnet (d) a pencil and tape
14. 14.True or false: a mirror is needed for the pendulum. (a) True (b) False
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a stopwatch (d) a heavy nut or washer
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a battery cell (d) a string
18. 18.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
19. 19.True or false: a string is not needed for the pendulum. (a) True (b) False
20. 20.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
21. 21.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
25. 25.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
26. 26.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
27. 27.🛟 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
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a ruler (d) a balloon
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) yeast (c) a string (d) a heavy nut or washer
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) True (b) False
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a battery cell (d) a pencil and tape
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
36. 36.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
37. 37.⚖️ 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) how far we pull it back
38. 38.True or false: a mirror is not needed for the pendulum. (a) False (b) True
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.⚖️ 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

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