Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 860 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much slower (d) much faster
2. 2.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
3. 3.True or false: yeast is needed for the pendulum. (a) True (b) False
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) gravity (d) magnetism
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a battery cell (d) a ruler
6. 6.⚖️ 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) how far we pull it back (c) the weight of the bob (d) the string length
7. 7.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is hot (d) it is wet
12. 12.True or false: a ruler is needed for the pendulum. (a) False (b) True
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a pencil and tape (d) a stopwatch
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a mirror
15. 15.⚖️ 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) True (b) False
16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
17. 17.⚖️ 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
18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
22. 22.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
23. 23.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a stopwatch (c) turmeric powder (d) a balloon
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
25. 25.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a balloon (c) a stopwatch (d) a string
26. 26.⚖️ 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) how far we pull it back
27. 27.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
28. 28.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
31. 31.⚖️ 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 same hook (c) the string length
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a string (c) a stopwatch (d) a ruler
33. 33.True or false: a string is needed for the pendulum. (a) True (b) False
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
35. 35.⚖️ 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) the string length (c) time for 10 swings
36. 36.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
37. 37.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
38. 38.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
40. 40.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed

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