Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 222 · 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.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
2. 2.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
3. 3.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
4. 4.⚖️ 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
5. 5.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
6. 6.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
9. 9.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
11. 11.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
12. 12.True or false: a magnet is needed for the pendulum. (a) True (b) False
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
14. 14.🕰️ A pendulum makes 20 swings in 40 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) time for 10 swings (c) the same hook (d) the string length
16. 16.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.⚖️ 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
19. 19.True or false: a mirror is not needed for the pendulum. (a) False (b) True
20. 20.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) a battery cell
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) turmeric powder
25. 25.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a balloon (d) a string
26. 26.⚖️ 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
27. 27.True or false: a mirror is needed for the pendulum. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a string (d) a balloon
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
31. 31.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
32. 32.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
33. 33.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) turmeric powder (d) a heavy nut or washer
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) a battery cell
37. 37.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a stopwatch (d) turmeric powder
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a ruler (d) a heavy nut or washer

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