Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 113 · 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 39 seconds?
2. 2.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a magnet (d) yeast
3. 3.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) turmeric powder (d) a balloon
4. 4.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a battery cell (c) a pencil and tape (d) a heavy nut or washer
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a ruler (d) a magnet
7. 7.⚖️ 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 string length (c) time for 10 swings (d) how far we pull it back
8. 8.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
10. 10.⚖️ 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
11. 11.⚖️ 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 string length (c) time for 10 swings (d) the same hook
12. 12.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
13. 13.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
14. 14.⚖️ 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
15. 15.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
16. 16.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a mirror (d) a string
19. 19.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a ruler (d) a string
20. 20.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
21. 21.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it becomes 4 times (d) it doubles
22. 22.True or false: a magnet is needed for the pendulum. (a) False (b) True
23. 23.⚖️ 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
24. 24.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
25. 25.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
26. 26.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a stopwatch (d) a magnet
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
28. 28.🧺 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 string
29. 29.⚖️ 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 measure it (c) we change it
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) yeast
31. 31.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
32. 32.⚖️ 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) True (b) False
33. 33.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.True or false: a balloon is not needed for the pendulum. (a) True (b) False
36. 36.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) yes, much slower (d) no, hardly at all
37. 37.True or false: a mirror is needed for the pendulum. (a) True (b) False
38. 38.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
39. 39.⚖️ 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 weight of the bob (c) the string length
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False

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