Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 215 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) about the same (d) much slower
2. 2.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a shorter string (d) a lighter bob
4. 4.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) turmeric powder (d) a heavy nut or washer
5. 5.⚖️ 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
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
11. 11.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
13. 13.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
15. 15.⚖️ 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) the same hook (c) the string length (d) time for 10 swings
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
17. 17.⚖️ 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
18. 18.True or false: yeast is not needed for the pendulum. (a) False (b) True
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
20. 20.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
21. 21.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) turmeric powder (d) a stopwatch
22. 22.True or false: a mirror is needed for the pendulum. (a) False (b) True
23. 23.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) yeast (d) a stopwatch
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a string (d) a pencil and tape
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) True (b) False
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
27. 27.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
29. 29.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a pencil and tape (d) a heavy nut or washer
30. 30.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
31. 31.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
32. 32.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a pencil and tape (d) a heavy nut or washer
34. 34.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a ruler (d) yeast
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the weight of the bob (d) time for 10 swings
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a string (d) a heavy nut or washer
40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?

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