Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 658 · 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 balloon is needed for the pendulum. (a) True (b) False
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) yeast (d) a stopwatch
3. 3.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
4. 4.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
5. 5.⚖️ 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
6. 6.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
7. 7.⚖️ 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 string length (c) the weight of the bob
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.True or false: yeast is needed for the pendulum. (a) True (b) False
10. 10.🔮 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
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
12. 12.True or false: a magnet is needed for the pendulum. (a) False (b) True
13. 13.True or false: yeast is not needed for the pendulum. (a) False (b) True
14. 14.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) it is more fun (d) one swing is too slow
15. 15.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a pencil and tape (d) a heavy nut or washer
16. 16.🧺 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 balloon
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.⚖️ 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) True (b) False
20. 20.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
21. 21.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) time for 10 swings (c) the same hook (d) the weight of the bob
23. 23.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a ruler (c) turmeric powder (d) yeast
24. 24.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
25. 25.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a balloon (d) a stopwatch
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a magnet (d) a heavy nut or washer
30. 30.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a battery cell
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
34. 34.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a lighter bob (d) a shorter string
35. 35.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) turmeric powder
37. 37.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a grandfather clock (d) a phone
38. 38.True or false: a ruler is needed for the pendulum. (a) False (b) True
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
40. 40.⚖️ 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 string length (c) how far we pull it back

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