Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 59 · 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) about the same (b) much faster (c) it cannot swing (d) much slower
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
4. 4.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) yeast (d) turmeric powder
5. 5.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a heavy brick (d) a glass bottle
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a stopwatch (c) a pencil and tape (d) a ruler
7. 7.⚖️ 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 weight of the bob (c) the string length
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
9. 9.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a pencil and tape (d) a string
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a string (d) a pencil and tape
12. 12.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
13. 13.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
15. 15.True or false: yeast is not needed for the pendulum. (a) False (b) True
16. 16.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
17. 17.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a ruler (c) yeast (d) a magnet
18. 18.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a ruler (d) a stopwatch
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
23. 23.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) how far we pull it back (c) the string length (d) the same hook
25. 25.True or false: a string 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) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a pencil and tape
27. 27.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
28. 28.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a string (d) a battery cell
29. 29.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
30. 30.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
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.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
33. 33.⚖️ 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 change it (c) we measure it
34. 34.⚖️ 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
35. 35.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
36. 36.True or false: a magnet is needed for the pendulum. (a) True (b) False
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) time for 10 swings (d) how far we pull it back
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
39. 39.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
40. 40.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed

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