Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 369 · 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.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
2. 2.True or false: yeast is needed for the pendulum. (a) False (b) True
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a string (d) a heavy nut or washer
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
5. 5.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a battery cell (d) a magnet
6. 6.True or false: a ruler is not needed for the pendulum. (a) False (b) True
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) turmeric powder
8. 8.True or false: a ruler is needed for the pendulum. (a) False (b) True
9. 9.⚖️ 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
10. 10.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) a battery cell
15. 15.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a string (d) a stopwatch
17. 17.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a magnet (d) a string
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a ruler (d) a string
21. 21.True or false: a magnet is not needed for the pendulum. (a) False (b) True
22. 22.⚖️ 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) False (b) True
23. 23.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) the string (d) magnetism
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
26. 26.⚖️ 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) how far we pull it back (c) the weight of the bob (d) the same hook
27. 27.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
28. 28.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a stopwatch (d) a pencil and tape
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
30. 30.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
31. 31.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a string (d) yeast
32. 32.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a balloon (d) a pencil and tape
36. 36.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
37. 37.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a balloon (c) a pencil and tape (d) a stopwatch
38. 38.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
39. 39.🔮 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
40. 40.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string

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