Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 809 · 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 “how far we pull it back”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: a mirror is not needed for the pendulum. (a) False (b) True
3. 3.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a magnet (d) turmeric powder
4. 4.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
5. 5.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
6. 6.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
7. 7.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
8. 8.True or false: a magnet is not needed for the pendulum. (a) True (b) False
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
10. 10.⚖️ 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) True (b) False
11. 11.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) turmeric powder (d) a heavy nut or washer
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🕰️ 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
15. 15.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
16. 16.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
17. 17.⚖️ 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 weight of the bob (d) how far we pull it back
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a mirror (d) a heavy nut or washer
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 weight of the bob (b) how far we pull it back (c) the same hook (d) the string length
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a stopwatch (d) a balloon
22. 22.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) yeast (c) a stopwatch (d) a string
23. 23.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
24. 24.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
25. 25.True or false: a battery cell is needed for the pendulum. (a) True (b) False
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
28. 28.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a mirror (d) a ruler
31. 31.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
32. 32.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a stopwatch (d) a heavy nut or washer
33. 33.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
34. 34.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
35. 35.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
36. 36.⚖️ 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) True (b) False
37. 37.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
38. 38.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) no, hardly at all (d) it stops swinging
39. 39.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
40. 40.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a heavy nut or washer (d) a magnet

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