Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 662 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
2. 2.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
3. 3.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more accurate (c) 10 is a lucky number (d) it is more fun
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a mirror (c) a heavy nut or washer (d) a ruler
5. 5.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a stopwatch (d) a battery cell
8. 8.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a stopwatch (d) a magnet
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the string length (c) how far we pull it back (d) the same hook
11. 11.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a mirror (d) a pencil and tape
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) yeast (d) a pencil and tape
15. 15.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) turmeric powder (d) a string
16. 16.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
17. 17.⚖️ 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 same hook (c) the string length
18. 18.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a balloon
19. 19.⚖️ 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
20. 20.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
21. 21.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the wind (d) the string
22. 22.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) turmeric powder (d) a balloon
23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
24. 24.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
25. 25.⚖️ 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
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
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 change it (c) we measure it
28. 28.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much faster (d) much slower
29. 29.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
31. 31.⚖️ 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
32. 32.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
33. 33.True or false: a mirror is needed for the pendulum. (a) True (b) False
34. 34.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
35. 35.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
36. 36.⚖️ 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 measure it (c) we change it
37. 37.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
38. 38.⚖️ 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
39. 39.True or false: a battery cell is needed for the pendulum. (a) True (b) False
40. 40.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a pencil and tape (d) yeast

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