Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 184 · 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.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a stopwatch (c) a string (d) a heavy nut or washer
6. 6.True or false: a mirror is needed for the pendulum. (a) False (b) True
7. 7.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a battery cell (d) a heavy nut or washer
8. 8.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
9. 9.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a string (d) turmeric powder
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
11. 11.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
14. 14.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
15. 15.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
16. 16.⚖️ 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 string length (c) how far we pull it back (d) the weight of the bob
17. 17.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
18. 18.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) yeast
19. 19.⚖️ 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
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) the weight of the bob (d) how far we pull it back
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) a magnet
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a string (d) a ruler
23. 23.True or false: a battery cell is needed for the pendulum. (a) False (b) True
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
26. 26.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a magnet (d) a ruler
27. 27.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) 10 is a lucky number (d) it is more accurate
28. 28.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
29. 29.True or false: a mirror is not needed for the pendulum. (a) False (b) True
30. 30.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a heavy nut or washer (d) a pencil and tape
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a mirror (d) a string
32. 32.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a magnet (d) a stopwatch
33. 33.True or false: a balloon is needed for the pendulum. (a) True (b) False
34. 34.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) it stops swinging (d) yes, much slower
35. 35.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
36. 36.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) yeast (d) a string
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed

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