Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 732 · 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.⚖️ 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
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
3. 3.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is wet (d) it is magnetic
6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about 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.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
9. 9.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
10. 10.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
11. 11.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
12. 12.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) a balloon
13. 13.⚖️ 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 same hook (c) the string length
14. 14.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a ruler (d) a balloon
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
16. 16.True or false: a string is not needed for the pendulum. (a) False (b) True
17. 17.🔮 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 halves (d) it doubles
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a pencil and tape
19. 19.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) a balloon (d) a battery cell
20. 20.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a stopwatch (d) a ruler
21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 39 seconds?
24. 24.⚖️ 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) the weight of the bob
25. 25.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a string (d) yeast
26. 26.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a magnet (d) a pencil and tape
27. 27.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
28. 28.⚖️ 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) time for 10 swings (c) the same hook (d) the string length
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
30. 30.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
33. 33.⚖️ 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
34. 34.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
35. 35.True or false: a balloon is needed for the pendulum. (a) True (b) False
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
38. 38.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a heavy nut or washer (d) a magnet
39. 39.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a heavy nut or washer (d) a pencil and tape

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