Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 796 · 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 1 second for one swing. How many swings does it make in 5 seconds?
2. 2.True or false: yeast is needed for the pendulum. (a) True (b) False
3. 3.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
4. 4.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) yeast (d) a string
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
7. 7.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
8. 8.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a battery cell (d) a balloon
9. 9.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a magnet (d) a ruler
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) the string length (d) the same hook
14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
15. 15.🛟 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
16. 16.🧺 Do we need a stopwatch 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 “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.True or false: yeast is not needed for the pendulum. (a) True (b) False
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a heavy nut or washer (c) a stopwatch (d) a pencil and tape
21. 21.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
22. 22.⚖️ 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
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
24. 24.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
25. 25.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a string (d) a heavy nut or washer
31. 31.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a heavy nut or washer (c) a pencil and tape (d) a string
34. 34.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
35. 35.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a string (d) yeast
37. 37.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
38. 38.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
39. 39.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
40. 40.⚖️ 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

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