Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 989 · 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.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
2. 2.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
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 measure it (b) we keep it the same (c) we change it
4. 4.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a mirror (d) a string
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.True or false: yeast is needed for the pendulum. (a) True (b) False
11. 11.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
12. 12.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
13. 13.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
16. 16.🔮 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
17. 17.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) time for 10 swings (d) how far we pull it back
19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
20. 20.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
21. 21.⚖️ 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
22. 22.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
23. 23.⚖️ 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 same hook (c) the string length (d) the weight of the bob
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a pencil and tape (d) a battery cell
25. 25.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
26. 26.True or false: a battery cell is needed for the pendulum. (a) True (b) False
27. 27.True or false: a balloon is not needed for the pendulum. (a) True (b) False
28. 28.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
30. 30.⚖️ 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
31. 31.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
32. 32.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🔮 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
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a string (d) a heavy nut or washer
36. 36.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
38. 38.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
39. 39.True or false: a balloon is needed for the pendulum. (a) False (b) True
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?

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