Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 523 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
2. 2.True or false: a battery cell is needed for the pendulum. (a) True (b) False
3. 3.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster
4. 4.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a mirror (c) a string (d) a stopwatch
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the weight of the bob (c) how far we pull it back (d) the string length
6. 6.True or false: a magnet is not needed for the pendulum. (a) True (b) False
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a battery cell (d) a stopwatch
9. 9.⚖️ 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
10. 10.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) one swing is too slow (d) it is more fun
11. 11.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string
14. 14.⚖️ 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 string length (c) the same hook
15. 15.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
16. 16.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) heavier (d) slower
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a stopwatch (d) a string
20. 20.🛟 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
21. 21.⚖️ 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) False (b) True
22. 22.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
23. 23.⚖️ 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
24. 24.⚖️ 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 string length (c) how far we pull it back
25. 25.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a pencil and tape (d) a balloon
26. 26.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
27. 27.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
28. 28.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a stopwatch (c) a ruler (d) a heavy nut or washer
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) a magnet
31. 31.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
32. 32.⚖️ 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 change it (c) we measure it
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
34. 34.True or false: a string is needed for the pendulum. (a) False (b) True
35. 35.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
36. 36.⚖️ 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) True (b) False
37. 37.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) time for 10 swings (c) the string length (d) the same hook

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