Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 499 · 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.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a magnet (d) a pencil and tape
2. 2.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
6. 6.True or false: a balloon is not needed for the pendulum. (a) False (b) True
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: a ruler is not needed for the pendulum. (a) True (b) False
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) yeast (d) a heavy nut or washer
10. 10.⚖️ 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
11. 11.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
12. 12.⚖️ 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
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) the string length (c) time for 10 swings
14. 14.True or false: a magnet is needed for the pendulum. (a) True (b) False
15. 15.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
16. 16.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
17. 17.⚖️ 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
18. 18.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
19. 19.⚖️ 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) the weight of the bob (c) the string length (d) time for 10 swings
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
22. 22.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
23. 23.True or false: a mirror is not needed for the pendulum. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the pendulum? (a) a ruler (b) yeast (c) a magnet (d) a mirror
26. 26.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a heavy nut or washer (d) a string
27. 27.🔮 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 doubles (d) it stays the same
28. 28.⚖️ 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
29. 29.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
32. 32.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
33. 33.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
34. 34.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a stopwatch
35. 35.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
36. 36.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) turmeric powder (d) a string
37. 37.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
38. 38.True or false: a string is needed for the pendulum. (a) True (b) False
39. 39.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a stopwatch (d) a heavy nut or washer

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