Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 638 · 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.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
2. 2.⚖️ 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
3. 3.⚖️ 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 same hook (c) the string length (d) how far we pull it back
4. 4.⚖️ 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
5. 5.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
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 battery cell (d) a stopwatch
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a stopwatch (d) a string
8. 8.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
9. 9.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
10. 10.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
11. 11.🧺 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 balloon (d) a stopwatch
12. 12.⚖️ 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
13. 13.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
17. 17.⚖️ 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
18. 18.True or false: a battery cell is needed for the pendulum. (a) False (b) True
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a stopwatch (d) turmeric powder
21. 21.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
22. 22.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) yeast (d) turmeric powder
23. 23.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a string (d) yeast
26. 26.⚖️ 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
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
28. 28.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more fun (d) it is more accurate
31. 31.🧺 Which of these is needed for the pendulum? (a) yeast (b) a ruler (c) a battery cell (d) a magnet
32. 32.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
33. 33.⚖️ 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
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 change it (c) we keep it the same
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
36. 36.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
37. 37.True or false: yeast is not needed for the pendulum. (a) False (b) True
38. 38.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
39. 39.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
40. 40.⚖️ 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 same hook (c) time for 10 swings

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