Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 341 · 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 makes 15 swings in 15 seconds. How many seconds does one swing take?
2. 2.⚖️ 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
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 keep it the same (b) we change it (c) we measure it
4. 4.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
5. 5.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a string (d) a balloon
6. 6.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a stopwatch (d) a string
7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
8. 8.True or false: a balloon is needed for the pendulum. (a) False (b) True
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) it is more fun (d) one swing is too slow
10. 10.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
12. 12.⚖️ 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 measure it (c) we keep it the same
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a string (d) a heavy nut or washer
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
15. 15.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
16. 16.⚖️ 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) time for 10 swings (c) the weight of the bob (d) the same hook
17. 17.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
18. 18.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
20. 20.🔮 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 becomes 4 times (d) it halves
21. 21.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
22. 22.⚖️ 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
23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
24. 24.⚖️ 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
25. 25.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
26. 26.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
27. 27.True or false: a magnet is needed for the pendulum. (a) False (b) True
28. 28.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
29. 29.True or false: a magnet is not needed for the pendulum. (a) False (b) True
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a sundial (d) a grandfather clock
31. 31.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a string (d) a battery cell
32. 32.True or false: yeast is not needed for the pendulum. (a) True (b) False
33. 33.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
34. 34.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) yeast (d) a ruler
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a heavy nut or washer (d) a pencil and tape
37. 37.True or false: a string is not needed for the pendulum. (a) True (b) False
38. 38.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
39. 39.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a magnet (d) a mirror
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) time for 10 swings (c) the string length

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