Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 95 · 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? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ 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
3. 3.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a heavy nut or washer (d) a magnet
6. 6.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
7. 7.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
8. 8.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
9. 9.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
11. 11.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
12. 12.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
13. 13.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
14. 14.⚖️ 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
15. 15.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
16. 16.True or false: a balloon is needed for the pendulum. (a) True (b) False
17. 17.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
19. 19.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) turmeric powder (d) a pencil and tape
20. 20.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
22. 22.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
23. 23.⚖️ 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 measure it (c) we change it
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a battery cell
25. 25.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
26. 26.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
27. 27.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
28. 28.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ 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) time for 10 swings (c) the same hook (d) the weight of the bob
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a heavy nut or washer (d) a ruler
34. 34.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a string (d) a mirror
35. 35.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a mirror (d) a string
36. 36.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
37. 37.⚖️ 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) True (b) False
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a pencil and tape (d) a stopwatch
39. 39.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) turmeric powder (d) a string

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