Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 588 · 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? True or false: the same hook is kept the same. (a) False (b) True
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a ruler (d) a heavy nut or washer
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a heavy nut or washer (d) a string
5. 5.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a mirror (d) a stopwatch
6. 6.⚖️ 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 weight of the bob
7. 7.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the same hook (c) the string length (d) time for 10 swings
9. 9.True or false: a balloon is needed for the pendulum. (a) False (b) True
10. 10.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) yeast (d) a ruler
11. 11.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
14. 14.⚖️ 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
15. 15.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
16. 16.🛟 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
17. 17.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the weight of the bob (c) how far we pull it back (d) the string length
19. 19.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
20. 20.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
21. 21.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
22. 22.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
24. 24.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
25. 25.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
26. 26.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
27. 27.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
28. 28.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) 10 is a lucky number (d) one swing is too slow
29. 29.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a heavy nut or washer (d) yeast
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a sundial (d) a phone
31. 31.True or false: a balloon is not needed for the pendulum. (a) True (b) False
32. 32.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
33. 33.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a string (d) turmeric powder
36. 36.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a balloon (c) a heavy nut or washer (d) a string
37. 37.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
39. 39.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) yes, much slower (d) no, hardly at all
40. 40.True or false: a magnet is not needed for the pendulum. (a) True (b) False

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