Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 515 · 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 a battery cell for the pendulum? (a) not needed (b) needed
2. 2.⚖️ 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) how far we pull it back (c) the same hook (d) time for 10 swings
3. 3.True or false: a string is needed for the pendulum. (a) True (b) False
4. 4.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
5. 5.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) yeast (d) a pencil and tape
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
9. 9.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
10. 10.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a pencil and tape (d) a heavy nut or washer
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a ruler (d) a string
13. 13.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
14. 14.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
15. 15.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
16. 16.🔮 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 doubles (d) it stays the same
17. 17.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
18. 18.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
19. 19.True or false: a ruler is needed for the pendulum. (a) False (b) True
20. 20.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the string length
22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a string (d) a heavy nut or washer
24. 24.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
25. 25.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
26. 26.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) one swing is too slow (d) 10 is a lucky number
27. 27.⚖️ 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
28. 28.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a pencil and tape (d) a stopwatch
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
31. 31.True or false: a mirror is needed for the pendulum. (a) False (b) True
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.True or false: a ruler is not needed for the pendulum. (a) True (b) False
34. 34.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
35. 35.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a balloon (d) yeast
36. 36.⚖️ 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
37. 37.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed

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