Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 163 · 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? What do we do with “how far we pull it back”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
4. 4.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
5. 5.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
6. 6.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
7. 7.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
8. 8.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a heavy nut or washer (d) yeast
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) a battery cell
11. 11.🕰️ 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
12. 12.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
13. 13.⚖️ 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
14. 14.🔮 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
15. 15.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
16. 16.True or false: a string is not needed for the pendulum. (a) True (b) False
17. 17.⚖️ 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
18. 18.True or false: a battery cell is needed for the pendulum. (a) False (b) True
19. 19.⚖️ 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) the same hook (d) the string length
20. 20.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a magnet
21. 21.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) a mirror
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
23. 23.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a pencil and tape (d) a stopwatch
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a ruler (d) turmeric powder
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
30. 30.⚖️ 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) False (b) True
31. 31.🛟 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
32. 32.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) yeast (d) a string
33. 33.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a ruler (d) a stopwatch
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
36. 36.⚖️ 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) time for 10 swings (d) the string length
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
38. 38.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
39. 39.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a magnet (d) a heavy nut or washer

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