Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 910 · 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? Which of these is the one thing we change? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the same hook
2. 2.🧺 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 mirror
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
6. 6.⚖️ 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
7. 7.⚖️ 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) True (b) False
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a magnet (d) a pencil and tape
10. 10.🧺 Which of these is not needed for the pendulum? (a) a string (b) yeast (c) a stopwatch (d) a pencil and tape
11. 11.True or false: a string is needed for the pendulum. (a) False (b) True
12. 12.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
13. 13.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) yeast (d) a stopwatch
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a string (d) a heavy nut or washer
17. 17.⚖️ 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
18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
19. 19.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
20. 20.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
21. 21.⚖️ 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) how far we pull it back (c) the string length
22. 22.⚖️ 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) how far we pull it back (d) time for 10 swings
23. 23.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
24. 24.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a pencil and tape (c) a string (d) a ruler
27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
28. 28.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
29. 29.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a balloon
32. 32.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
33. 33.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a battery cell (d) a string
34. 34.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
35. 35.True or false: a mirror is needed for the pendulum. (a) False (b) True
36. 36.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
37. 37.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more fun (d) it is more accurate
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a heavy nut or washer (d) a stopwatch
39. 39.True or false: a balloon is not needed for the pendulum. (a) False (b) True
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False

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