Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 290 · 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 magnet for the pendulum? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) a battery cell (d) a mirror
3. 3.⚖️ 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 measure it (c) we keep it the same
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a ruler (d) a string
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
7. 7.⚖️ 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
8. 8.True or false: a mirror is needed for the pendulum. (a) True (b) False
9. 9.⚖️ 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
10. 10.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
13. 13.⚖️ 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
14. 14.True or false: a balloon is needed for the pendulum. (a) True (b) False
15. 15.⚖️ 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
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.True or false: a mirror is not needed for the pendulum. (a) False (b) True
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.⚖️ 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) the same hook (c) how far we pull it back (d) the string length
20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
23. 23.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a mirror (d) a string
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) how far we pull it back (d) the weight of the bob
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
27. 27.True or false: yeast is needed for the pendulum. (a) True (b) False
28. 28.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a sundial (d) a phone
29. 29.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a battery cell (d) a string
31. 31.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil and tape (d) a heavy nut or washer
33. 33.True or false: a balloon is not needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
35. 35.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a ruler (d) a mirror
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a magnet (d) a ruler
37. 37.True or false: a ruler is needed for the pendulum. (a) False (b) True
38. 38.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a pencil and tape (d) a battery cell
39. 39.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
40. 40.True or false: a string is needed for the pendulum. (a) True (b) False

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