Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 667 · 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.True or false: a mirror is not needed for the pendulum. (a) True (b) False
2. 2.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a ruler (c) a heavy nut or washer (d) a pencil and tape
3. 3.⚖️ 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 measure it (c) we change it
4. 4.⚖️ 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 weight of the bob
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
6. 6.True or false: a mirror is needed for the pendulum. (a) True (b) False
7. 7.⚖️ 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) the weight of the bob (c) time for 10 swings (d) the same hook
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
9. 9.True or false: a balloon is not needed for the pendulum. (a) True (b) False
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
12. 12.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
15. 15.True or false: a string is not needed for the pendulum. (a) True (b) False
16. 16.⚖️ 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
17. 17.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
18. 18.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
19. 19.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a ruler (c) a heavy nut or washer (d) a string
20. 20.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
21. 21.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
22. 22.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) yeast (d) a pencil and tape
24. 24.True or false: a magnet 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 same hook is kept the same. (a) True (b) False
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a magnet (d) a ruler
27. 27.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a stopwatch (d) yeast
31. 31.⚖️ 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) time for 10 swings
32. 32.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
33. 33.True or false: a battery cell is needed for the pendulum. (a) False (b) True
34. 34.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
35. 35.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a heavy nut or washer (d) a balloon
36. 36.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
37. 37.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
38. 38.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
39. 39.⚖️ 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
40. 40.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?

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