Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 134 · 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? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
3. 3.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a digital watch (d) a grandfather clock
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) time for 10 swings (c) the weight of the bob (d) how far we pull it back
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) time for 10 swings (d) the weight of the bob
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
7. 7.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
8. 8.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a battery cell (d) a pencil and tape
9. 9.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a battery cell (d) a stopwatch
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
11. 11.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
12. 12.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
13. 13.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a balloon
16. 16.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
17. 17.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
18. 18.🕰️ 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
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a ruler (d) a battery cell
27. 27.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a balloon (d) a heavy nut or washer
28. 28.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
29. 29.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
31. 31.⚖️ 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
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a magnet (d) a heavy nut or washer
34. 34.True or false: a ruler is needed for the pendulum. (a) True (b) False
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a string (d) a ruler
37. 37.True or false: yeast is needed for the pendulum. (a) False (b) True
38. 38.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) yeast
39. 39.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
40. 40.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging

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