Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 756 · 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? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
2. 2.⚖️ 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 change it (c) we measure it
3. 3.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a stopwatch (d) a heavy nut or washer
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) turmeric powder (d) a battery cell
10. 10.True or false: a balloon is not needed for the pendulum. (a) False (b) True
11. 11.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a string (d) a magnet
12. 12.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a string (d) a pencil and tape
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
14. 14.⚖️ 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
15. 15.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a battery cell (d) yeast
17. 17.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
19. 19.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
20. 20.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
21. 21.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
22. 22.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
23. 23.⚖️ 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 string length (c) the weight of the bob (d) how far we pull it back
24. 24.🕰️ 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 accurate (d) it is more fun
25. 25.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
26. 26.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) a battery cell (d) a mirror
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
28. 28.⚖️ 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) time for 10 swings (c) the string length
29. 29.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) yeast (d) a pencil and tape
30. 30.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
31. 31.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a balloon (c) turmeric powder (d) a battery cell
32. 32.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
33. 33.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) no, hardly at all (d) it stops swinging
34. 34.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
36. 36.True or false: a ruler is not needed for the pendulum. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a pencil and tape (d) a stopwatch
38. 38.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
39. 39.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
40. 40.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed

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