Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 477 · 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.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
2. 2.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a balloon (d) a stopwatch
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a mirror (d) a stopwatch
4. 4.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
5. 5.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
8. 8.⚖️ 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 weight of the bob (c) the same hook (d) how far we pull it back
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
13. 13.🧺 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 balloon (d) a ruler
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
15. 15.⚖️ 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) False (b) True
16. 16.True or false: a ruler is needed for the pendulum. (a) True (b) False
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a stopwatch (d) a pencil and tape
18. 18.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) turmeric powder (d) a string
19. 19.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
20. 20.⚖️ 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 string length (c) time for 10 swings (d) the weight of the bob
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
22. 22.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a sundial (d) a digital watch
23. 23.🛟 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
24. 24.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a stopwatch (d) a pencil and tape
26. 26.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a stopwatch (d) a heavy nut or washer
29. 29.🔮 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
30. 30.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
31. 31.⚖️ 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
32. 32.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
34. 34.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a string
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.True or false: yeast is needed for the pendulum. (a) True (b) False
37. 37.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
38. 38.True or false: a magnet is needed for the pendulum. (a) False (b) True
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed

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