Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 232 · 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.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
2. 2.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
3. 3.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
6. 6.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
7. 7.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a pencil and tape (d) a ruler
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a stopwatch (c) a string (d) a ruler
10. 10.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
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 stopwatch (d) a string
12. 12.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
17. 17.True or false: a magnet is needed for the pendulum. (a) True (b) False
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.⚖️ 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) True (b) False
20. 20.⚖️ 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) the same hook (c) the string length (d) how far we pull it back
21. 21.🛟 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
22. 22.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
25. 25.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
26. 26.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
27. 27.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much slower (d) yes, much faster
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
30. 30.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
31. 31.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
32. 32.⚖️ 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 same hook (c) time for 10 swings
33. 33.⚖️ 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
34. 34.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) yeast (d) a stopwatch
36. 36.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
37. 37.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more accurate (c) it is more fun (d) 10 is a lucky number
38. 38.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
40. 40.True or false: a magnet is not needed for the pendulum. (a) True (b) False

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