Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 254 · 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.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 33 seconds?
2. 2.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a heavy nut or washer (d) a string
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) turmeric powder (c) a ruler (d) a pencil and tape
5. 5.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more fun (d) it is more accurate
6. 6.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
7. 7.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a battery cell (d) a ruler
9. 9.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a magnet (d) a mirror
10. 10.True or false: a string is not needed for the pendulum. (a) True (b) False
11. 11.⚖️ 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
12. 12.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a battery cell
15. 15.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
16. 16.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) a battery cell (d) a mirror
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
18. 18.🔮 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 doubles (d) it stays the same
19. 19.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
20. 20.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
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 measure it (b) we change it (c) we keep it the same
22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a pencil and tape (d) yeast
23. 23.⚖️ 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) how far we pull it back (d) the same hook
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
26. 26.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a string (d) a heavy nut or washer
29. 29.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
30. 30.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a battery cell (d) a stopwatch
31. 31.True or false: a string is needed for the pendulum. (a) False (b) True
32. 32.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a heavy nut or washer (d) a stopwatch
33. 33.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
35. 35.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
36. 36.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
37. 37.⚖️ 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
38. 38.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a balloon (d) a heavy nut or washer
40. 40.⚖️ 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

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