Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 256 · 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.⚖️ 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 measure it (c) we keep it the same
2. 2.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
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.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the weight of the bob (c) the same hook (d) time for 10 swings
6. 6.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a glass bottle (d) a heavy brick
7. 7.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
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) time for 10 swings (c) how far we pull it back
9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
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.True or false: a mirror is needed for the pendulum. (a) False (b) True
12. 12.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
13. 13.🔮 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 halves (d) it becomes 4 times
14. 14.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a mirror (d) a ruler
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a stopwatch (d) a pencil and tape
17. 17.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
18. 18.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
19. 19.🕰️ 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
20. 20.True or false: a mirror is not needed for the pendulum. (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 kept the same. (a) False (b) True
22. 22.True or false: yeast is not needed for the pendulum. (a) True (b) False
23. 23.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
24. 24.🧺 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
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
26. 26.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a string (d) a stopwatch
27. 27.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a ruler (d) a stopwatch
28. 28.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) yeast
30. 30.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a battery cell (d) yeast
31. 31.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
33. 33.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a battery cell (d) turmeric powder
34. 34.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
35. 35.⚖️ 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) the same hook (d) how far we pull it back
36. 36.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
37. 37.True or false: a string is needed for the pendulum. (a) True (b) False
38. 38.⚖️ 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 change it (c) we measure it
39. 39.⚖️ 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
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?

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