Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 449 · 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? Which of these is the one thing we change? (a) the weight of the bob (b) time for 10 swings (c) the string length (d) how far we pull it back
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a pencil and tape (d) a balloon
3. 3.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
4. 4.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
5. 5.True or false: a mirror is not needed for the pendulum. (a) True (b) False
6. 6.⚖️ 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
7. 7.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
10. 10.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a ruler (d) a balloon
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
13. 13.🧺 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) a battery cell
14. 14.🧺 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) a magnet
15. 15.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a balloon (d) a stopwatch
17. 17.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a pencil and tape (d) a magnet
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
19. 19.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a heavy nut or washer (d) turmeric powder
20. 20.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) about the same (d) much slower
21. 21.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging
22. 22.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
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 change it (b) we measure it (c) we keep it the same
24. 24.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
25. 25.🧺 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
26. 26.True or false: a battery cell is needed for the pendulum. (a) True (b) False
27. 27.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
28. 28.⚖️ 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
29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
32. 32.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
33. 33.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
34. 34.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
35. 35.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
36. 36.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the string length (c) how far we pull it back (d) the same hook
39. 39.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
40. 40.🧺 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) turmeric powder (d) a ruler

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