Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 630 · 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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
2. 2.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
3. 3.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
4. 4.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a magnet
6. 6.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
7. 7.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a stopwatch (d) a heavy nut or washer
8. 8.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) turmeric powder (d) a pencil and tape
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
10. 10.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) a mirror
12. 12.True or false: a string is not needed for the pendulum. (a) False (b) True
13. 13.True or false: a string is needed for the pendulum. (a) True (b) False
14. 14.True or false: a ruler is needed for the pendulum. (a) False (b) True
15. 15.🛟 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
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a battery cell (d) a ruler
19. 19.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.⚖️ 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) the same hook
24. 24.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
25. 25.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
26. 26.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a string (c) yeast (d) a balloon
27. 27.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a heavy nut or washer (d) yeast
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
32. 32.True or false: a balloon is not needed for the pendulum. (a) False (b) True
33. 33.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
36. 36.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
37. 37.⚖️ 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 string length (c) the weight of the bob (d) time for 10 swings
38. 38.⚖️ 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) False (b) True
39. 39.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) the string (d) magnetism
40. 40.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a balloon (d) a ruler

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