Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 445 · 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? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.True or false: a ruler is needed for the pendulum. (a) False (b) True
3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string
4. 4.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a string (d) turmeric powder
5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
6. 6.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a balloon (d) a stopwatch
7. 7.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
8. 8.True or false: a mirror is not needed for the pendulum. (a) True (b) False
9. 9.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a battery cell (d) a heavy nut or washer
10. 10.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) the same hook (d) time for 10 swings
12. 12.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) yeast (d) a pencil and tape
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) how far we pull it back (c) time for 10 swings (d) the string length
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.⚖️ 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) False (b) True
18. 18.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
21. 21.⚖️ 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
22. 22.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
24. 24.⚖️ 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
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
26. 26.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
27. 27.True or false: yeast is needed for the pendulum. (a) True (b) False
28. 28.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a pencil and tape
30. 30.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
31. 31.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
32. 32.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a string (d) a stopwatch
34. 34.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
35. 35.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
36. 36.⚖️ 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
37. 37.True or false: a balloon is not needed for the pendulum. (a) True (b) False
38. 38.True or false: a mirror is needed for the pendulum. (a) True (b) False
39. 39.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
40. 40.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a mirror (c) a pencil and tape (d) a string

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