Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 516 · 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 not needed for the pendulum. (a) False (b) True
2. 2.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
3. 3.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) a magnet
4. 4.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) about the same (d) much slower
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a string (d) turmeric powder
8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
13. 13.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
14. 14.True or false: a balloon is not needed for the pendulum. (a) True (b) False
15. 15.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a ruler (d) a stopwatch
17. 17.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
18. 18.True or false: a magnet is needed for the pendulum. (a) False (b) True
19. 19.🧺 Which of these is not needed for the pendulum? (a) a string (b) yeast (c) a ruler (d) a stopwatch
20. 20.🛟 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
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a pencil and tape (d) a string
23. 23.⚖️ 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
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
28. 28.⚖️ 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
29. 29.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
30. 30.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) a battery cell (d) turmeric powder
31. 31.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a magnet (d) a battery cell
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a mirror (d) a string
35. 35.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
36. 36.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
37. 37.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a battery cell (d) a stopwatch
38. 38.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the same hook
40. 40.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a battery cell (d) a stopwatch

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