Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 56 · 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.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
2. 2.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
3. 3.⚖️ 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
4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
5. 5.🧺 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 magnet
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the weight of the bob
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a pencil and tape (d) a string
10. 10.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a heavy nut or washer (d) a stopwatch
11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) yeast (c) a ruler (d) a string
12. 12.🔮 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 halves (d) it stays the same
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
14. 14.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
15. 15.True or false: a ruler is not needed for the pendulum. (a) False (b) True
16. 16.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) yes, much slower (d) it stops swinging
17. 17.⚖️ 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
18. 18.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
20. 20.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
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.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
23. 23.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a stopwatch (d) a battery cell
24. 24.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a balloon (d) a pencil and tape
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
26. 26.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) a battery cell (d) a magnet
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a heavy nut or washer (d) a string
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) turmeric powder
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
30. 30.True or false: a balloon is needed for the pendulum. (a) True (b) False
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) yeast (c) a ruler (d) a string
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
33. 33.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) how far we pull it back (c) the string length (d) time for 10 swings
35. 35.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a pencil and tape
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
38. 38.True or false: yeast is not needed for the pendulum. (a) False (b) True
39. 39.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a battery cell (d) a string

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