Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 294 · 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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) time for 10 swings (c) the string length (d) the same hook
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a stopwatch
6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
7. 7.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
8. 8.True or false: a battery cell is needed for the pendulum. (a) True (b) False
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
10. 10.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
11. 11.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a magnet (d) turmeric powder
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a ruler
15. 15.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a string (d) a pencil and tape
16. 16.⚖️ 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 same hook (d) the string length
17. 17.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) yeast (d) turmeric powder
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a heavy nut or washer (d) yeast
19. 19.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the weight of the bob
21. 21.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
22. 22.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
23. 23.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) it is more fun (d) 10 is a lucky number
24. 24.True or false: a ruler is needed for the pendulum. (a) False (b) True
25. 25.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
26. 26.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a pencil and tape (d) yeast
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) a battery cell
28. 28.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
29. 29.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a string
30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
32. 32.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a mirror (d) a heavy nut or washer
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
36. 36.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a balloon (d) a heavy nut or washer
37. 37.True or false: a balloon is needed for the pendulum. (a) True (b) False
38. 38.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a phone (d) a grandfather clock
39. 39.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a heavy nut or washer (d) a magnet
40. 40.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed

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