Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 880 · 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 “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.⚖️ 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
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) the weight of the bob (c) the string length
4. 4.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
5. 5.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a stopwatch (d) turmeric powder
6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
7. 7.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
8. 8.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a pencil and tape (d) a mirror
10. 10.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a magnet (d) a ruler
12. 12.True or false: a balloon is not needed for the pendulum. (a) False (b) True
13. 13.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a heavy nut or washer (d) turmeric powder
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a pencil and tape (d) yeast
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) the string length (d) time for 10 swings
17. 17.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
18. 18.⚖️ 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) how far we pull it back
19. 19.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
20. 20.⚖️ 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
21. 21.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
22. 22.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a grandfather clock (d) a digital watch
23. 23.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a battery cell (d) a stopwatch
24. 24.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a pencil and tape (c) turmeric powder (d) a balloon
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a battery cell
26. 26.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
27. 27.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a stopwatch (d) turmeric powder
28. 28.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
29. 29.True or false: a ruler is needed for the pendulum. (a) False (b) True
30. 30.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
31. 31.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a balloon (d) a stopwatch
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a stopwatch (d) a pencil and tape
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
36. 36.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
37. 37.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
39. 39.True or false: yeast is not needed for the pendulum. (a) True (b) False
40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?

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