Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 532 · 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.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a ruler (d) a pencil and tape
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) how far we pull it back (c) the weight of the bob (d) the string length
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
8. 8.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
10. 10.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a battery cell (d) a mirror
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
15. 15.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a heavy nut or washer (d) a ruler
17. 17.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
21. 21.⚖️ 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
22. 22.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the same hook
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
28. 28.⚖️ 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
29. 29.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the weight of the bob
31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a mirror
33. 33.🧺 Do we need a magnet 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 balloon (b) a pencil and tape (c) a stopwatch (d) a ruler
35. 35.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
36. 36.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
37. 37.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a magnet (d) a mirror
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False

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