Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 89 · 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 5 swings in 10 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 string length”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.⚖️ 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
4. 4.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
5. 5.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the string length (c) how far we pull it back (d) the same hook
7. 7.⚖️ 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 same hook (c) time for 10 swings (d) the string length
8. 8.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
9. 9.True or false: a balloon is needed for the pendulum. (a) False (b) True
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a pencil and tape (d) a heavy nut or washer
11. 11.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a stopwatch (d) yeast
12. 12.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a stopwatch (c) a pencil and tape (d) a string
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
16. 16.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a mirror (d) a string
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
18. 18.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
19. 19.🧺 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) turmeric powder (d) a string
20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
23. 23.True or false: a magnet is needed for the pendulum. (a) False (b) True
24. 24.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a stopwatch (d) a mirror
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
27. 27.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
28. 28.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it halves (d) it becomes 4 times
29. 29.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a balloon (d) a heavy nut or washer
30. 30.⚖️ 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) True (b) False
31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
32. 32.True or false: yeast is not needed for the pendulum. (a) True (b) False
33. 33.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
34. 34.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
35. 35.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a phone (d) a grandfather clock
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a mirror (d) a heavy nut or washer
37. 37.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
39. 39.⚖️ 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) True (b) False
40. 40.⚖️ 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

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