Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 84 · 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 needed for the pendulum. (a) True (b) False
2. 2.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the string length (c) the same hook (d) time for 10 swings
4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
5. 5.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
7. 7.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a pencil and tape (d) a stopwatch
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a lighter bob (d) a shorter string
9. 9.🧺 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 pencil and tape
10. 10.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
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) the same hook
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) yeast (d) a heavy nut or washer
15. 15.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a stopwatch (d) a mirror
16. 16.True or false: a ruler is needed for the pendulum. (a) True (b) False
17. 17.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) yeast
18. 18.True or false: a balloon is not needed for the pendulum. (a) True (b) False
19. 19.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a ruler (d) a balloon
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
27. 27.🧺 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
28. 28.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a pencil and tape (d) a balloon
29. 29.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
30. 30.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a string (d) a stopwatch
32. 32.⚖️ 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) False (b) True
33. 33.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a stopwatch (d) a mirror
35. 35.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
37. 37.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a magnet
38. 38.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) turmeric powder
40. 40.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True

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