Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 344 · 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: turmeric powder is needed for the pendulum. (a) True (b) False
2. 2.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
4. 4.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a stopwatch
5. 5.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) the same hook (d) time for 10 swings
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.🔮 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
11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
12. 12.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
13. 13.⚖️ 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
14. 14.⚖️ 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) True (b) False
15. 15.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more accurate (c) it is more fun (d) 10 is a lucky number
16. 16.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
17. 17.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
18. 18.True or false: a mirror is not needed for the pendulum. (a) True (b) False
19. 19.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) a magnet
21. 21.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the weight of the bob (c) time for 10 swings
25. 25.True or false: a balloon is not needed for the pendulum. (a) False (b) True
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil and tape (d) a string
27. 27.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
28. 28.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) yeast (d) turmeric powder
29. 29.⚖️ 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) the weight of the bob (c) time for 10 swings (d) the same hook
30. 30.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
31. 31.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
32. 32.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a stopwatch (d) a ruler
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
34. 34.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a battery cell (d) a balloon
35. 35.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
36. 36.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it stays the same (d) it halves
37. 37.⚖️ 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 measure it (c) we keep it the same
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
39. 39.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a ruler (d) a magnet
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

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