Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 691 · 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) False (b) True
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
3. 3.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
4. 4.⚖️ 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) False (b) True
5. 5.⚖️ 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) how far we pull it back (d) the weight of the bob
6. 6.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a mirror (c) turmeric powder (d) a battery cell
7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
8. 8.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
9. 9.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) a mirror (d) a balloon
11. 11.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) yeast
13. 13.⚖️ 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
14. 14.True or false: a magnet is needed for the pendulum. (a) True (b) False
15. 15.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) it is more accurate (d) 10 is a lucky number
16. 16.True or false: a balloon is needed for the pendulum. (a) False (b) True
17. 17.⚖️ 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
18. 18.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
19. 19.🔮 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
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a stopwatch (d) a ruler
21. 21.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
22. 22.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
23. 23.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a battery cell (c) a string (d) a pencil and tape
24. 24.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a magnet (d) turmeric powder
25. 25.🧺 Which of these is not needed for the pendulum? (a) a string (b) yeast (c) a pencil and tape (d) a ruler
26. 26.True or false: a ruler is needed for the pendulum. (a) True (b) False
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) how far we pull it back (d) time for 10 swings
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a stopwatch (d) a ruler
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) a mirror
30. 30.⚖️ 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
31. 31.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
32. 32.🛟 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
33. 33.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
34. 34.⚖️ 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
35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
36. 36.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
40. 40.⚖️ 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

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