Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 839 · 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 stopwatch for the pendulum? (a) needed (b) not needed
2. 2.🔮 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 doubles (d) it halves
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) turmeric powder
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a ruler (d) a stopwatch
6. 6.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
7. 7.⚖️ 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) True (b) False
8. 8.⚖️ 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 change it (c) we measure it
9. 9.True or false: a pencil and tape is 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 measure it (b) we keep it the same (c) we change it
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
13. 13.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a balloon (d) a heavy nut or washer
14. 14.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
16. 16.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
17. 17.⚖️ 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) False (b) True
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) time for 10 swings (c) the string length (d) how far we pull it back
19. 19.🧺 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 ruler (d) turmeric powder
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
21. 21.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a ruler (d) a stopwatch
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the string length (c) how far we pull it back (d) time for 10 swings
23. 23.True or false: a balloon is not needed for the pendulum. (a) False (b) True
24. 24.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
25. 25.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
26. 26.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
27. 27.⚖️ 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
28. 28.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
29. 29.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a pencil and tape (d) yeast
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) yeast (d) a heavy nut or washer
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
33. 33.True or false: a magnet is needed for the pendulum. (a) False (b) True
34. 34.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
36. 36.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
37. 37.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.True or false: a balloon is 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 pencil and tape (b) a balloon (c) a stopwatch (d) a heavy nut or washer

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