Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 674 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
2. 2.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
3. 3.True or false: yeast is needed for the pendulum. (a) False (b) True
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a heavy nut or washer (d) a stopwatch
5. 5.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a ruler (d) a battery cell
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a mirror
8. 8.🔮 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
9. 9.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
11. 11.True or false: a mirror is needed for the pendulum. (a) True (b) False
12. 12.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) turmeric powder (d) a balloon
16. 16.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a mirror (d) a string
17. 17.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) turmeric powder (d) a stopwatch
18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a battery cell (d) a stopwatch
19. 19.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
20. 20.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
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) True (b) False
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
26. 26.True or false: a balloon is needed for the pendulum. (a) False (b) True
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
29. 29.🛟 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
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) turmeric powder
31. 31.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
32. 32.⚖️ 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 string length (c) time for 10 swings (d) how far we pull it back
33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
34. 34.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
35. 35.⚖️ 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) how far we pull it back
36. 36.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
37. 37.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
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) True (b) False
39. 39.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a balloon (d) a pencil and tape
40. 40.⚖️ 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

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