Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 431 · 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 what we measure? (a) time for 10 swings (b) how far we pull it back (c) the string length (d) the weight of the bob
2. 2.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
3. 3.⚖️ 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 weight of the bob (d) the string length
4. 4.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
5. 5.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
8. 8.⚖️ 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 measure it (c) we change it
9. 9.⚖️ 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
10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
12. 12.True or false: a ruler is needed for the pendulum. (a) True (b) False
13. 13.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a pencil and tape (d) a stopwatch
16. 16.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
17. 17.True or false: a magnet is needed for the pendulum. (a) True (b) False
18. 18.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
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.⚖️ 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) how far we pull it back (c) the string length
21. 21.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
22. 22.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) turmeric powder (d) a magnet
23. 23.🕰️ 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) it is more accurate (d) 10 is a lucky number
24. 24.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
25. 25.🔮 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 faster (d) much slower
26. 26.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a battery cell (d) a magnet
27. 27.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a pencil and tape (d) a string
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a heavy nut or washer (d) a stopwatch
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a battery cell (d) a pencil and tape
31. 31.⚖️ 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 string length (c) the same hook
32. 32.True or false: yeast is needed for the pendulum. (a) True (b) False
33. 33.🕰️ 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
34. 34.🔮 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 becomes 4 times (d) it halves
35. 35.⚖️ 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
36. 36.True or false: a string is needed for the pendulum. (a) False (b) True
37. 37.True or false: a heavy nut or washer 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 same hook”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) turmeric powder (d) a string
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a magnet (d) a heavy nut or washer

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