Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 714 · 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 stopwatch is not needed for the pendulum. (a) False (b) True
2. 2.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
3. 3.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
4. 4.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a mirror (c) a heavy nut or washer (d) a pencil and tape
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) how far we pull it back (c) time for 10 swings (d) the string length
6. 6.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
7. 7.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
9. 9.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it halves (d) it becomes 4 times
12. 12.True or false: a string is not needed for the pendulum. (a) False (b) True
13. 13.True or false: a mirror is not needed for the pendulum. (a) True (b) False
14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
15. 15.True or false: a battery cell is needed for the pendulum. (a) True (b) False
16. 16.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
17. 17.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
18. 18.True or false: a mirror is needed for the pendulum. (a) False (b) True
19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
20. 20.True or false: yeast is not needed for the pendulum. (a) False (b) True
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a balloon (d) a string
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) how far we pull it back
25. 25.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a magnet (d) a balloon
26. 26.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) yeast (d) a pencil and tape
29. 29.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) a mirror
33. 33.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) turmeric powder
35. 35.⚖️ 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) False (b) True
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a heavy nut or washer (d) a pencil and tape
38. 38.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a heavy nut or washer (d) a magnet
39. 39.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a battery cell

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids