Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 916 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a mirror (d) a stopwatch
2. 2.⚖️ 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) time for 10 swings (d) the same hook
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) turmeric powder (d) a ruler
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
7. 7.True or false: a balloon is needed for the pendulum. (a) True (b) False
8. 8.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
10. 10.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
11. 11.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
12. 12.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
13. 13.🕰️ 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) it is more fun (d) one swing is too slow
14. 14.🧺 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) a magnet
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a heavy nut or washer (d) a stopwatch
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
17. 17.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a mirror (c) a balloon (d) a magnet
18. 18.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
19. 19.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) the string length (d) time for 10 swings
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a string (d) turmeric powder
22. 22.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a heavy nut or washer (d) a string
24. 24.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
26. 26.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a glass bottle (d) a heavy brick
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
28. 28.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) a balloon
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
32. 32.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a mirror (d) a battery cell
33. 33.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
34. 34.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a heavy nut or washer (d) a mirror
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
36. 36.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a lighter bob (d) a longer string
37. 37.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a phone (d) a grandfather clock
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?

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