Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 612 · 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.True or false: yeast is not needed for the pendulum. (a) True (b) False
2. 2.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
3. 3.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a stopwatch (d) a balloon
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
5. 5.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
6. 6.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string
7. 7.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.True or false: a magnet is not needed for the pendulum. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a battery cell (d) a stopwatch
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.🛟 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
15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
16. 16.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the string length (c) the weight of the bob (d) how far we pull it back
18. 18.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) time for 10 swings (c) the weight of the bob (d) the same hook
22. 22.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a battery cell (d) a heavy nut or washer
23. 23.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
24. 24.True or false: a balloon is needed for the pendulum. (a) True (b) False
25. 25.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a string (d) yeast
28. 28.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
29. 29.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a stopwatch (d) a ruler
30. 30.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
32. 32.True or false: a ruler is not needed for the pendulum. (a) True (b) False
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
34. 34.⚖️ 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
35. 35.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a string (d) a stopwatch
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a mirror (c) a pencil and tape (d) a stopwatch
40. 40.⚖️ 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

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