Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 180 · 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.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
2. 2.🛟 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
3. 3.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
4. 4.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
5. 5.⚖️ 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 weight of the bob (c) the same hook (d) time for 10 swings
6. 6.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) yeast (c) a heavy nut or washer (d) a ruler
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.True or false: a magnet is needed for the pendulum. (a) False (b) True
10. 10.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a magnet (d) a pencil and tape
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
12. 12.⚖️ 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 change it (c) we measure it
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.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
19. 19.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
20. 20.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
21. 21.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a mirror (d) a stopwatch
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a pencil and tape
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
26. 26.⚖️ 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
27. 27.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a string (d) a magnet
29. 29.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a mirror (d) a stopwatch
31. 31.⚖️ 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 same hook (d) the weight of the bob
32. 32.True or false: a balloon is not needed for the pendulum. (a) True (b) False
33. 33.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
34. 34.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) turmeric powder
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
38. 38.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
39. 39.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a battery cell (c) turmeric powder (d) yeast
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True

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