Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 197 · 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 turmeric powder for the pendulum? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a magnet (d) a balloon
3. 3.⚖️ 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 weight of the bob (c) time for 10 swings
4. 4.🛟 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
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a mirror (d) a heavy nut or washer
7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
8. 8.True or false: a ruler is needed for the pendulum. (a) False (b) True
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a string (d) a mirror
10. 10.⚖️ 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 same hook
11. 11.⚖️ 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
12. 12.⚖️ 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) time for 10 swings (c) the string length
13. 13.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
14. 14.🔮 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
15. 15.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
16. 16.🧺 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
17. 17.True or false: a string is needed for the pendulum. (a) True (b) False
18. 18.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a string (d) a stopwatch
20. 20.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a magnet (d) a ruler
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) yeast (d) a string
25. 25.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
26. 26.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.⚖️ 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
32. 32.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
36. 36.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a pencil and tape (d) a magnet
37. 37.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
38. 38.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
39. 39.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
40. 40.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False

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