Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 196 · 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.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
2. 2.⚖️ 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) time for 10 swings
3. 3.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a phone (d) a sundial
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.True or false: a mirror is not needed for the pendulum. (a) True (b) False
6. 6.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
7. 7.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) turmeric powder (d) a heavy nut or washer
8. 8.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a ruler (d) a string
11. 11.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
12. 12.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
13. 13.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
14. 14.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) a mirror (d) a balloon
15. 15.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) a battery cell
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) turmeric powder (d) a heavy nut or washer
18. 18.True or false: a ruler is not needed for the pendulum. (a) True (b) False
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
21. 21.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
22. 22.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
23. 23.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
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 measure it (c) we keep it the same
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
28. 28.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
29. 29.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a magnet (d) a pencil and tape
30. 30.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
31. 31.True or false: a balloon is needed for the pendulum. (a) False (b) True
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) a magnet
33. 33.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
34. 34.⚖️ 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
35. 35.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a mirror (c) a string (d) a ruler
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a pencil and tape (c) a string (d) a ruler
39. 39.⚖️ 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
40. 40.🧺 Do we need a string for the pendulum? (a) not needed (b) needed

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