Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 858 · 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 not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a string (d) a magnet
2. 2.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a stopwatch (d) a string
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.🛟 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
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the same hook (c) the weight of the bob (d) how far we pull it back
8. 8.True or false: a balloon is needed for the pendulum. (a) False (b) True
9. 9.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
10. 10.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
11. 11.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
12. 12.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
13. 13.True or false: a string is needed for the pendulum. (a) True (b) False
14. 14.⚖️ 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) the same hook
15. 15.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a heavy nut or washer (d) yeast
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) turmeric powder (d) a battery cell
19. 19.⚖️ 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
20. 20.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a balloon (c) a string (d) a heavy nut or washer
22. 22.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a string (d) yeast
26. 26.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
27. 27.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
28. 28.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more fun (d) it is more accurate
29. 29.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
30. 30.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
31. 31.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) turmeric powder (d) a heavy nut or washer
33. 33.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a battery cell (d) a ruler
34. 34.⚖️ 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) True (b) False
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
36. 36.True or false: a ruler is needed for the pendulum. (a) True (b) False
37. 37.True or false: a ruler is not needed for the pendulum. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
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) False (b) True

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