Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 181 · 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.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
4. 4.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a magnet (d) a pencil and tape
5. 5.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
6. 6.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a balloon (d) a ruler
10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) time for 10 swings (d) how far we pull it back
12. 12.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
14. 14.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a string (d) a battery cell
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
17. 17.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) turmeric powder (d) a balloon
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.⚖️ 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) how far we pull it back (c) the weight of the bob (d) the string length
20. 20.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) turmeric powder (d) a battery cell
23. 23.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
24. 24.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) turmeric powder (d) a stopwatch
26. 26.⚖️ 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) False (b) True
27. 27.🧺 Which of these is needed for the pendulum? (a) a string (b) yeast (c) a balloon (d) turmeric powder
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a battery cell
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
30. 30.True or false: a ruler is not needed for the pendulum. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
33. 33.True or false: a mirror is needed for the pendulum. (a) False (b) True
34. 34.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
35. 35.True or false: a battery cell is needed for the pendulum. (a) False (b) True
36. 36.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
37. 37.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
38. 38.⚖️ 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) True (b) False
39. 39.True or false: turmeric powder 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) False (b) True

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