Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 83 · 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? Which of these is the one thing we change? (a) the same hook (b) the string length (c) how far we pull it back (d) the weight of the bob
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a magnet (d) a ruler
3. 3.True or false: a magnet is needed for the pendulum. (a) False (b) True
4. 4.⚖️ 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 weight of the bob
5. 5.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
6. 6.⚖️ 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
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 same hook
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
9. 9.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
10. 10.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) 10 is a lucky number (d) it is more accurate
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
13. 13.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) turmeric powder (d) yeast
14. 14.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
15. 15.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
16. 16.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a battery cell (d) a stopwatch
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.True or false: yeast is needed for the pendulum. (a) True (b) False
20. 20.⚖️ 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 same hook (c) the string length
21. 21.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
22. 22.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a grandfather clock (d) a digital watch
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
24. 24.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
25. 25.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
26. 26.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a mirror
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
30. 30.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
31. 31.True or false: a battery cell is needed for the pendulum. (a) True (b) False
32. 32.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
33. 33.True or false: yeast is not needed for the pendulum. (a) False (b) True
34. 34.True or false: a balloon is needed for the pendulum. (a) False (b) True
35. 35.⚖️ 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
36. 36.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
37. 37.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
38. 38.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a stopwatch (d) yeast
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
40. 40.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a magnet (d) a string

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