Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 358 · 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.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a battery cell (d) a heavy nut or washer
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the same hook (c) time for 10 swings (d) how far we pull it back
6. 6.⚖️ 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
7. 7.True or false: a string is needed for the pendulum. (a) False (b) True
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
9. 9.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
10. 10.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it stays the same (d) it doubles
11. 11.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a mirror (d) a string
12. 12.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a ruler (d) a heavy nut or washer
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a stopwatch (c) a pencil and tape (d) a ruler
14. 14.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
15. 15.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
16. 16.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a string (d) a mirror
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
18. 18.True or false: a ruler is needed for the pendulum. (a) False (b) True
19. 19.⚖️ 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) the same hook (d) time for 10 swings
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a balloon (d) a ruler
21. 21.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
22. 22.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
23. 23.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
26. 26.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
27. 27.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) magnetism (d) the wind
28. 28.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more fun (d) it is more accurate
29. 29.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a string (d) a magnet
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a string (d) yeast
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
33. 33.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
35. 35.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
36. 36.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
38. 38.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a mirror (d) a balloon
39. 39.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a ruler (c) yeast (d) a mirror
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

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