Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 634 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) turmeric powder (d) a ruler
2. 2.⚖️ 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 change it (c) we keep it the same
3. 3.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a stopwatch (d) a magnet
4. 4.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a mirror (c) turmeric powder (d) a balloon
5. 5.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
6. 6.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) magnetism (d) gravity
7. 7.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a mirror
8. 8.🕰️ 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
9. 9.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) yeast
10. 10.True or false: a magnet is not needed for the pendulum. (a) False (b) True
11. 11.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) yeast (d) a heavy nut or washer
13. 13.⚖️ 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
14. 14.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
18. 18.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
19. 19.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging
20. 20.⚖️ 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 measure it (c) we change it
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.True or false: a balloon is needed for the pendulum. (a) False (b) True
24. 24.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
25. 25.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
26. 26.⚖️ 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 same hook (c) the string length (d) the weight of the bob
27. 27.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a string (d) turmeric powder
29. 29.⚖️ 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) how far we pull it back (c) the string length (d) the weight of the bob
30. 30.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
31. 31.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a pencil and tape (d) a magnet
33. 33.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a ruler (d) a string
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a heavy nut or washer (d) a balloon
36. 36.True or false: yeast is not needed for the pendulum. (a) True (b) False
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.True or false: a magnet is needed for the pendulum. (a) False (b) True
40. 40.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a balloon (d) a pencil and tape

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