Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 258 · 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.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a string (d) a magnet
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the same hook (c) the string length (d) the weight of the bob
3. 3.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
6. 6.True or false: yeast is needed for the pendulum. (a) False (b) True
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
8. 8.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it halves (d) it stays the same
9. 9.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
10. 10.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) quicker (d) heavier
11. 11.⚖️ 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 change it (c) we measure it
12. 12.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
13. 13.⚖️ 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
14. 14.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) yeast
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a stopwatch (d) a heavy nut or washer
17. 17.⚖️ 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
18. 18.True or false: a balloon is not needed for the pendulum. (a) True (b) False
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
20. 20.⚖️ 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 same hook (c) how far we pull it back (d) time for 10 swings
21. 21.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a magnet (d) a ruler
22. 22.🕰️ 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
23. 23.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
24. 24.True or false: a magnet is needed for the pendulum. (a) False (b) True
25. 25.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
26. 26.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
27. 27.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) a magnet
29. 29.🧺 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 battery cell
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 weight of the bob (c) the string length
31. 31.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
32. 32.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
34. 34.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a balloon (c) yeast (d) a mirror
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) turmeric powder
36. 36.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a balloon (d) a magnet
37. 37.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
39. 39.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
40. 40.⚖️ 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

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