Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 397 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
2. 2.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a heavy brick (d) a glass bottle
3. 3.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
4. 4.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
5. 5.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
6. 6.True or false: a magnet is needed for the pendulum. (a) False (b) True
7. 7.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
10. 10.⚖️ 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 weight of the bob (d) how far we pull it back
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a pencil and tape (d) a magnet
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the weight of the bob (c) the string length (d) time for 10 swings
13. 13.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a stopwatch (d) turmeric powder
14. 14.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
15. 15.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
16. 16.⚖️ 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
17. 17.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
18. 18.🛟 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
19. 19.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
20. 20.⚖️ 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
21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
22. 22.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) yeast
24. 24.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
25. 25.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
26. 26.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a battery cell (d) a mirror
27. 27.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a string (d) a ruler
28. 28.🔮 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 stays the same (d) it doubles
29. 29.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) turmeric powder (d) a pencil and tape
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) a battery cell
32. 32.True or false: yeast is needed for the pendulum. (a) True (b) False
33. 33.🧺 Which of these is needed for the pendulum? (a) a balloon (b) yeast (c) a heavy nut or washer (d) turmeric powder
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a pencil and tape (d) a balloon
36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
37. 37.True or false: a balloon is needed for the pendulum. (a) False (b) True
38. 38.True or false: a ruler is needed for the pendulum. (a) True (b) False
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a balloon (c) a pencil and tape (d) a string
40. 40.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?

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