Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 604 · 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? 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
2. 2.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more accurate (c) 10 is a lucky number (d) it is more fun
3. 3.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
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.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a shorter string (d) a heavier bob
9. 9.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
10. 10.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a string (d) a ruler
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
12. 12.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a battery cell (d) a ruler
13. 13.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a magnet (d) a string
14. 14.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a stopwatch (d) a string
18. 18.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a heavy nut or washer (d) a pencil and tape
20. 20.🔮 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
21. 21.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
22. 22.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
24. 24.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) yeast (d) a battery cell
27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the same hook (c) the weight of the bob (d) the string length
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
32. 32.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) a magnet (d) yeast
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) how far we pull it back (d) time for 10 swings
34. 34.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a stopwatch (d) a string
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) a magnet
37. 37.True or false: a battery cell is needed for the pendulum. (a) True (b) False
38. 38.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a balloon (d) a mirror
39. 39.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
40. 40.⚖️ 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 weight of the bob

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