Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 44 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
2. 2.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a mirror
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) time for 10 swings (d) the weight of the bob
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) a magnet
8. 8.⚖️ 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
9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a battery cell (d) a heavy nut or washer
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) yeast (d) a stopwatch
15. 15.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) yeast (d) a magnet
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🔮 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
19. 19.🧺 Which of these is not needed for the pendulum? (a) a string (b) a mirror (c) a stopwatch (d) a pencil and tape
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a pencil and tape (d) a string
22. 22.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a ruler (d) a magnet
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a string
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
26. 26.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) turmeric powder (d) a magnet
27. 27.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
28. 28.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
29. 29.⚖️ 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) the string length (c) how far we pull it back (d) the same hook
30. 30.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a balloon (c) a heavy nut or washer (d) a stopwatch
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
33. 33.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
34. 34.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) a mirror (d) turmeric powder
36. 36.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
37. 37.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a mirror (d) yeast
38. 38.⚖️ 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
39. 39.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True

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