Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 721 · 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 turmeric powder for the pendulum? (a) not needed (b) needed
2. 2.⚖️ 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) the same hook
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a string (d) a stopwatch
5. 5.⚖️ 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
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
7. 7.⚖️ 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
8. 8.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
9. 9.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
10. 10.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
11. 11.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
12. 12.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
13. 13.⚖️ 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
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the weight of the bob (c) time for 10 swings
15. 15.⚖️ 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) how far we pull it back (c) time for 10 swings (d) the string length
16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
17. 17.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a pencil and tape (d) turmeric powder
20. 20.🔮 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
21. 21.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) turmeric powder (d) a balloon
22. 22.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
23. 23.True or false: a ruler is not needed for the pendulum. (a) True (b) False
24. 24.⚖️ 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) the string length (d) time for 10 swings
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
26. 26.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
27. 27.🧺 Which of these is not needed for the pendulum? (a) a string (b) a mirror (c) a pencil and tape (d) a stopwatch
28. 28.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
29. 29.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a stopwatch (d) a pencil and tape
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a mirror (d) a string
31. 31.🕰️ 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
32. 32.True or false: a mirror is needed for the pendulum. (a) False (b) True
33. 33.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
35. 35.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
36. 36.True or false: a battery cell is needed for the pendulum. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a stopwatch (d) a string
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.True or false: a battery cell is not needed for the pendulum. (a) True (b) False

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