Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 795 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a stopwatch (d) a heavy nut or washer
2. 2.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
3. 3.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a balloon (d) a ruler
5. 5.⚖️ 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) the same hook (d) time for 10 swings
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 weight of the bob
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) about the same (d) much faster
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
11. 11.True or false: a ruler is needed for the pendulum. (a) True (b) False
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
13. 13.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) magnetism (d) gravity
14. 14.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
15. 15.⚖️ 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 weight of the bob
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) turmeric powder (d) a string
18. 18.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
20. 20.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) yeast (d) a stopwatch
21. 21.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) it stops swinging (d) yes, much slower
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a stopwatch (d) a magnet
24. 24.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
26. 26.True or false: a battery cell is needed for the pendulum. (a) True (b) False
27. 27.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a mirror (d) turmeric powder
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
29. 29.⚖️ 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
30. 30.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a magnet (d) a string
32. 32.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a mirror (d) a stopwatch
34. 34.True or false: a string is not needed for the pendulum. (a) False (b) True
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
36. 36.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a magnet (d) a pencil and tape
37. 37.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
38. 38.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) yeast (d) a ruler
39. 39.🧺 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) a string (d) a battery cell
40. 40.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True

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