Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 893 · 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? True or false: time for 10 swings is what we measure. (a) True (b) False
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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a heavy nut or washer (d) a pencil and tape
4. 4.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a stopwatch (d) a magnet
5. 5.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.⚖️ 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
9. 9.True or false: a battery cell is needed for the pendulum. (a) True (b) False
10. 10.⚖️ 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) the string length (c) the weight of the bob (d) how far we pull it back
11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
12. 12.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a pencil and tape
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a string (d) yeast
17. 17.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
18. 18.⚖️ 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
19. 19.True or false: a magnet is needed for the pendulum. (a) False (b) True
20. 20.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) yeast (d) a string
21. 21.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
22. 22.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a stopwatch (c) a pencil and tape (d) a heavy nut or washer
24. 24.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
25. 25.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
26. 26.⚖️ 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
27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
28. 28.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a balloon (d) a string
29. 29.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
30. 30.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a mirror (c) a balloon (d) a battery cell
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
32. 32.⚖️ 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
33. 33.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a string
35. 35.True or false: yeast is not needed for the pendulum. (a) False (b) True
36. 36.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the same hook
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
39. 39.True or false: yeast is needed for the pendulum. (a) False (b) True
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True

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