Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 245 · 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.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
2. 2.⚖️ 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) False (b) True
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.🧺 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 pencil and tape
5. 5.🔮 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
6. 6.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
8. 8.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a magnet (c) a ruler (d) a pencil and tape
9. 9.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
10. 10.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a ruler (d) a mirror
11. 11.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
12. 12.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) yes, much slower (d) no, hardly at all
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
15. 15.⚖️ 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) the weight of the bob (c) time for 10 swings (d) the same hook
16. 16.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
17. 17.⚖️ 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) time for 10 swings (d) the string length
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a heavy nut or washer (d) a magnet
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
21. 21.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
22. 22.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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
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.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a heavy nut or washer (d) a balloon
26. 26.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a string (d) a battery cell
27. 27.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a mirror (d) a heavy nut or washer
28. 28.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
30. 30.🕰️ 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
31. 31.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a ruler (d) a heavy nut or washer
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
36. 36.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a mirror (d) a string
39. 39.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
40. 40.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?

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