Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 357 · 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.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) yeast (d) a balloon
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
3. 3.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
6. 6.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
7. 7.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
8. 8.🧺 Do we need a pencil and tape 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 magnet (b) a string (c) a ruler (d) a stopwatch
10. 10.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a balloon (d) yeast
14. 14.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a ruler (d) a battery cell
15. 15.True or false: a string is not needed for the pendulum. (a) True (b) False
16. 16.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) a battery cell
20. 20.⚖️ 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) True (b) False
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) the same hook (d) the weight of the bob
22. 22.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
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 change it (c) we keep it the same
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the weight of the bob (c) time for 10 swings (d) the string length
26. 26.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a mirror (d) a stopwatch
28. 28.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
30. 30.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
31. 31.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
33. 33.⚖️ 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
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
35. 35.True or false: yeast is not needed for the pendulum. (a) False (b) True
36. 36.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a pencil and tape (d) a string
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a string (d) a stopwatch
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?

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