Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 525 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a balloon (d) a ruler
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) the weight of the bob (d) the same hook
4. 4.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
5. 5.⚖️ 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
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) the same hook (d) time for 10 swings
8. 8.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a stopwatch (d) a string
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a battery cell (d) a stopwatch
14. 14.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
15. 15.True or false: a battery cell is needed for the pendulum. (a) True (b) False
16. 16.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a string (d) turmeric powder
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
18. 18.True or false: a mirror is needed for the pendulum. (a) True (b) False
19. 19.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
20. 20.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
21. 21.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
22. 22.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
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) 10 is a lucky number (d) it is more accurate
24. 24.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
25. 25.⚖️ 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 weight of the bob (c) time for 10 swings
26. 26.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
28. 28.⚖️ 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) True (b) False
29. 29.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the pendulum? (a) yeast (b) a ruler (c) a battery cell (d) turmeric powder
32. 32.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a string (d) a balloon
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a pencil and tape (d) a stopwatch
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
35. 35.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) yeast (d) a string
38. 38.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) turmeric powder (d) a stopwatch
39. 39.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) a mirror (d) a magnet
40. 40.True or false: a string is needed for the pendulum. (a) True (b) False

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