Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 675 · 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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ 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) how far we pull it back (c) the string length
4. 4.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a battery cell (d) a magnet
5. 5.⚖️ 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) True (b) False
6. 6.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) yeast (d) a stopwatch
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) yeast (c) a stopwatch (d) a pencil and tape
8. 8.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
9. 9.⚖️ 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
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
13. 13.True or false: a battery cell is needed for the pendulum. (a) True (b) False
14. 14.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a ruler (c) a battery cell (d) a magnet
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a pencil and tape (d) a heavy nut or washer
18. 18.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
19. 19.True or false: yeast is not needed for the pendulum. (a) True (b) False
20. 20.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
23. 23.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) turmeric powder (d) a string
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a heavy nut or washer (d) a battery cell
26. 26.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a mirror (d) a stopwatch
27. 27.⚖️ 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
28. 28.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
29. 29.⚖️ 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 same hook (c) time for 10 swings (d) how far we pull it back
30. 30.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
35. 35.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) gravity (d) magnetism
36. 36.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) heavier (d) slower
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
38. 38.⚖️ 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
39. 39.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a string (d) a ruler

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