Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 346 · 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 pencil and tape (b) yeast (c) a stopwatch (d) a string
2. 2.⚖️ 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) the weight of the bob (c) how far we pull it back (d) the string length
3. 3.⚖️ 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
4. 4.⚖️ 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 weight of the bob (c) the same hook (d) the string length
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a balloon (d) a stopwatch
6. 6.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) one swing is too slow (d) it is more fun
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
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) time for 10 swings (c) the string length
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) turmeric powder
10. 10.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a pencil and tape (d) a string
12. 12.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
13. 13.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
14. 14.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
15. 15.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
16. 16.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a ruler (d) a balloon
17. 17.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a pencil and tape (d) a battery cell
18. 18.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a string (c) a heavy nut or washer (d) a stopwatch
22. 22.True or false: a string is not needed for the pendulum. (a) False (b) True
23. 23.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) turmeric powder (d) a mirror
26. 26.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
31. 31.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) heavier (d) quicker
32. 32.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a heavy nut or washer (d) a battery cell
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
37. 37.⚖️ 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
38. 38.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a mirror (d) yeast
40. 40.⚖️ 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

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