Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 919 · 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? Which of these is the one thing we change? (a) the string length (b) the weight of the bob (c) how far we pull it back (d) the same hook
2. 2.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
3. 3.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a ruler
8. 8.True or false: a magnet is not needed for the pendulum. (a) True (b) False
9. 9.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much faster (d) yes, much slower
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a ruler (c) a magnet (d) a mirror
13. 13.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a stopwatch (c) a pencil and tape (d) a heavy nut or washer
14. 14.🧺 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) yeast (d) a stopwatch
15. 15.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
16. 16.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number
17. 17.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
18. 18.⚖️ 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 change it (c) we measure it
19. 19.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
20. 20.True or false: a string is not needed for the pendulum. (a) True (b) False
21. 21.⚖️ 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 weight of the bob (c) the same hook (d) the string length
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
24. 24.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a magnet (d) a pencil and tape
27. 27.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil and tape (d) a stopwatch
30. 30.True or false: a balloon is needed for the pendulum. (a) True (b) False
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a stopwatch (d) a string
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
35. 35.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
36. 36.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
37. 37.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
38. 38.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a mirror (d) a heavy nut or washer
39. 39.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a string (d) a battery cell
40. 40.🔮 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

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