Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 681 · 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 balloon (b) yeast (c) a heavy nut or washer (d) a magnet
2. 2.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a mirror (d) a balloon
3. 3.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
4. 4.⚖️ 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 measure it (c) we keep it the same
5. 5.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
6. 6.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a heavy nut or washer (d) a string
8. 8.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
11. 11.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
12. 12.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
13. 13.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) it is more accurate (d) one swing is too slow
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
15. 15.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
17. 17.⚖️ 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 weight of the bob (c) the string length
18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
19. 19.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) turmeric powder
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a stopwatch (d) a heavy nut or washer
25. 25.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
26. 26.⚖️ 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) False (b) True
27. 27.True or false: a ruler is not needed for the pendulum. (a) True (b) False
28. 28.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) turmeric powder (d) a mirror
31. 31.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
32. 32.⚖️ 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
33. 33.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a string (c) a pencil and tape (d) a ruler
35. 35.True or false: a string is not needed for the pendulum. (a) True (b) False
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 change it (b) we keep it the same (c) we measure it
37. 37.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
39. 39.True or false: a magnet is not needed for the pendulum. (a) False (b) True
40. 40.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?

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