Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 90 · 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 the one thing we change? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the weight of the bob
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a balloon (d) a heavy nut or washer
3. 3.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
4. 4.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
5. 5.⚖️ 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) the string length (c) time for 10 swings
6. 6.🔮 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
7. 7.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) a magnet (d) a heavy nut or washer
12. 12.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
16. 16.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
17. 17.🧺 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 ruler
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.True or false: a ruler is needed for the pendulum. (a) True (b) False
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) quicker (d) heavier
24. 24.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
25. 25.True or false: a string is not needed for the pendulum. (a) False (b) True
26. 26.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
30. 30.True or false: a mirror is not needed for the pendulum. (a) True (b) False
31. 31.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a ruler (d) a battery cell
32. 32.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
33. 33.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
34. 34.True or false: yeast is not needed for the pendulum. (a) True (b) False
35. 35.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) one swing is too slow (d) 10 is a lucky number
36. 36.True or false: yeast is needed for the pendulum. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a string (d) a ruler
38. 38.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a pencil and tape
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a string (d) turmeric powder

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