Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 548 · 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.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) turmeric powder (d) a string
2. 2.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a string (d) a stopwatch
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
6. 6.🛟 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
7. 7.⚖️ 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 measure it (c) we change it
8. 8.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) 10 is a lucky number (d) it is more fun
9. 9.⚖️ 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) how far we pull it back (d) the weight of the bob
10. 10.True or false: a mirror is needed for the pendulum. (a) False (b) True
11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a ruler (d) a magnet
12. 12.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
13. 13.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
14. 14.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a magnet (d) a heavy nut or washer
16. 16.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
20. 20.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a string (d) turmeric powder
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a ruler (d) yeast
23. 23.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
24. 24.True or false: a ruler is needed for the pendulum. (a) True (b) False
25. 25.⚖️ 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
26. 26.🔮 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
27. 27.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) the string length (d) the weight of the bob
29. 29.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
30. 30.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
31. 31.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
33. 33.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
34. 34.True or false: yeast is not needed for the pendulum. (a) True (b) False
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
36. 36.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a ruler (d) a balloon
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a ruler (d) a heavy nut or washer
38. 38.⚖️ 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
39. 39.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?

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